Materiały źródłowe

• #1 Intracranial hematoma – Symptoms and causes – Mayo Clinic

  https://www.mayoclinic.org/diseases-conditions/intracranial-hematoma/symptoms-causes/syc-20356145

  An intracranial hematoma is a collection of blood within the skull. The blood may collect in the brain tissue or underneath the skull, pressing on the brain. It’s usually caused by a blood vessel that bursts in the brain. It also may be caused by a head injury due to a car accident or fall. […] The most common cause of an intracranial hematoma is a head injury. A head injury that causes bleeding within the skull may result from motor vehicle or bicycle accidents, falls, assaults, and sports injuries. […] A head injury can cause an intracranial hematoma even if there’s no open wound, bruise or other obvious damage. […] What happens in the brain to cause bleeding varies based on the type of hematoma. There are three categories of hematoma subdural hematoma, epidural hematoma and intracerebral hematoma.

• #1 Brain Bleed (Intracranial Hemorrhage): Causes & Symptoms

  https://my.clevelandclinic.org/health/diseases/14480-brain-bleed-hemorrhage-intracranial-hemorrhage

  A brain bleed (intracranial hemorrhage) is a type of stroke that causes bleeding in your head. […] A leaky, broken or burst blood vessel causes a brain bleed. As a result, excess blood pools in your brain. A brain bleed can happen after: […] Brain bleeds are common after falls or traumatic injuries. They’re also common in people with unmanaged high blood pressure. […] The severity and outcome of a brain bleed depend on its cause, location inside of your skull, size of the bleed, the amount of time that passes between the bleed and treatment. […] A brain bleed can affect anyone at any age, from newborns to adults. It’s more common among adults over age 65. […] A brain bleed can be caused by a buildup of fatty deposits in your arteries (atherosclerosis), a blood clot, a weak spot in a blood vessel wall (cerebral aneurysm), or a leak from abnormally formed connections between arteries and veins (arteriovenous malformation, or AVM). […] If not treated quickly, a brain bleed can lead to permanent brain damage or death.

• #1 Intracranial Hemorrhage – StatPearls – NCBI Bookshelf

  https://www.ncbi.nlm.nih.gov/books/NBK470242/

  Intracranial hemorrhage comprises 4 broad types of hemorrhage, including epidural hemorrhage, subdural hemorrhage, subarachnoid hemorrhage, and intraparenchymal hemorrhage. Each type of hemorrhage arises from distinct etiologies, leading to variable clinical findings, prognosis, and outcomes. […] An epidural hematoma is arterial or venous in origin. The classical arterial epidural hematoma occurs after blunt trauma to the head, typically the temporal region. This type of bleeding may also occur after a penetrating head injury. Typically, a skull fracture with damage to the middle meningeal artery causes arterial bleeding into the potential epidural space. […] A venous epidural hematoma occurs after a skull fracture, and the venous bleeding from the skull fracture fills the epidural space.

• #1 Intracerebral Hemorrhage – StatPearls – NCBI Bookshelf

  https://www.ncbi.nlm.nih.gov/books/NBK553103/

  Non-traumatic Intracerebral hemorrhage can be divided into primary and secondary, where primary bleeds account for 85% of all ICH and are related to chronic hypertension or amyloid angiopathy. […] Secondary hemorrhage is considered to be related but not limited to bleeding diathesis (iatrogenic, congenital, acquired), vascular malformations, neoplasms, hemorrhagic conversion of an ischaemic stroke, and drug abuse. […] Primary or spontaneous ICH accounts for over 85% of hemorrhagic strokes. […] A primary ICH diagnosis is often one of exclusion where no other pathological or structural cause is found and is supported by a history of chronic hypertension, increased age, and location of the clot. […] In patients with chronic arterial hypertension, it is thought that lipohyalinosis and degenerative changes of penetrating arterioles result in Charcot-Bouchard aneurysms in the small arterial vessels supplying deep cerebral structures.

• #1 Intracranial hemorrhage – Wikipedia

  https://en.wikipedia.org/wiki/Intracranial_hemorrhage

  Besides from head injury, it may occur spontaneously, usually from a ruptured cerebral aneurysm (focal outpouchings with weakened walls on the arteries on the brain surface that are prone to rupture). […] Cerebral ateriovenous malformation (Cerebral AVM) is characterised by abnormal shunting between cerebral arteries and veins without going through capillaries. Instead the blood goes through a collection of small vessels from arteries to veins. These collection of abnormal small vessels is termed as „nidus”. This condition happens in 0.1% of the population has a risk of 2 to 4% per year for intracranial bleeding.

• #1 Intracerebral Hemorrhage – StatPearls – NCBI Bookshelf

  https://www.ncbi.nlm.nih.gov/books/NBK553103/

  Over 60% of primary bleeds are related to hypertension, and these hematomas are most commonly seen in the posterior fossa, pons, basal ganglia, and thalamus. […] Lobar hemorrhages in older patients are often the distinguishing feature of amyloid angiopathy. […] In contrast, when an ICH is due to an underlying structural pathology, such as vascular anomalies or malignant tissue, they are categorized as secondary ICH. […] Vascular lesions include arteriovenous malformations, cavernous angiomas, cerebral aneurysms, and aorto-venous fistulae, and these are often the cause of ICH in the young, otherwise healthy, population. […] Cerebral hematomas may also be secondary to a primary or metastatic lesion or even the hemorrhagic conversion of a recent ischaemic infarct. […] Further, congenial and acquired bleeding diathesis is a common factor in ICHs, becoming more common due to the large population of adults on an anticoagulant (i.e., warfarin) and antiplatelet (aspirin) therapy.

• #1 Intracranial hemorrhage – Wikipedia

  https://en.wikipedia.org/wiki/Intracranial_hemorrhage

  Intracranial hemorrhage (ICH) may be classified as either traumatic or non-traumatic (spontaneous). Traumatic causes include head trauma resulting from falls, vehicular accidents, or physical assault. Non-traumatic causes are more varied and often related to underlying conditions. Chronic hypertension is the most common non-traumatic cause, particularly in deep brain structures such as the basal ganglia, thalamus, pons, and posterior fossa. Other spontaneous causes include cerebral amyloid angiopathy, especially among the elderly, as well as bleeding disorders such as hemophilia and thrombocytopenia, vascular malformations like arteriovenous malformation (AVMs), and brain tumors. […] The use of anticoagulant or antiplatelet medications, such as warfarin and aspirin, has been associated with increased hematoma volume and expansion.

• #1 Etiology of tumor-related intracranial hemorrhage (Chapter 3) – Intracerebral Hemorrhage

  https://www.cambridge.org/core/books/intracerebral-hemorrhage/etiology-of-tumorrelated-intracranial-hemorrhage/C9E1489836DF96684EA605AEDCCF0F8E

  Cancer-related intracerebral bleeding is an uncommon cause of hemorrhage and represents only a fraction of all non-traumatic intracranial hemorrhages (ICHs). The mechanisms of intratumoral hemorrhage remain unclear, but include tumor necrosis, rupture of tumor blood vessels and invasion of parenchymal blood vessels by tumor. […] Metastatic brain tumors can cause intracerebral hemorrhage. Brain metastases from any primary tumor can cause bleeding, but the different primaries have a wide variability in their tendency to bleed. […] A tumor embolus may cause an aneurysm that can lead to potentially fatal intraparenchymal or subarachnoid hemorrhages. The clinical presentation of intratumoral hemorrhage is often indistinguishable from spontaneous ICH from more typical etiologies such as hypertension. […] The prognosis of a hemorrhagic neoplasm is primarily determined by the prognosis of the underlying malignancy.

• #1 Intracerebral hemorrhage | Radiology Reference Article | Radiopaedia.org

  https://radiopaedia.org/articles/intracerebral-hemorrhage-1?lang=us

  Intracerebral hemorrhages arise from rupture of a small blood vessel within the brain parenchyma or, less commonly, of a blood vessel adjacent to the parenchyma (e.g. jet hematoma). […] Non-traumatic intracerebral hemorrhages were historically etiologically divided according to whether or not they have an underlying structural lesion or bleeding diathesis. […] Spontaneous intracerebral hemorrhage presumed due to small vessel disease (formerly primary intracerebral hemorrhage) includes hypertensive microangiopathy and cerebral amyloid angiopathy. […] Secondary intracerebral hemorrhage: hemorrhage complicating some underlying structural lesion or bleeding diathesis includes hemorrhagic transformation of infarct (ischemic stroke), vascular malformation (e.g., brain arteriovenous malformation, cerebral cavernous malformation), tumor (e.g., metastases, glioblastoma), cerebral venous thrombosis, and bleeding diathesis (e.g., anticoagulation therapy). […] Etiologies more commonly seen in the pediatric or young adult demographic are discussed separately: see stroke in children and young adults.

• #1 Intracerebral Hemorrhage – StatPearls – NCBI Bookshelf

  https://www.ncbi.nlm.nih.gov/books/NBK553103/

  Studies have elicited certain tendencies in the population that suffer ICHs, thereby hypothesizing both modifiable and non-modifiable risk factors. […] The latter include non-white ethnicity, older age, familial apolipoprotein syndromes, and being male. […] The radiological finding of cerebral amyloid angiopathy also increases the risk of both lobar and recurrent ICH. […] Uncontrolled or untreated hypertension is a modifiable risk factor that increases the risk of ICH by two in the aging population. […] Other adjustable risk factors include abuse of drugs such and alcohol, nicotine, and cocaine.

• #1 Subdural Hematoma: What It Is, Causes, Symptoms & Treatment

  https://my.clevelandclinic.org/health/diseases/21183-subdural-hematoma

  Age: People 65 and older and babies are more at risk for getting subdural hematomas. As you age, your brain shrinks inside your skull. The space between your skull and brain widens. This makes the tiny veins in the membranes between your skull and brain stretch. These thinned, stretched veins are more likely to tear, even if you experience a minor head injury. Babies dont have strong neck muscles to protect themselves from head trauma. When someone shakes a baby forcefully, they can develop a subdural hematoma (shaken baby syndrome). […] Playing contact sports: People who play high-impact or extreme sports (like football, rugby or snowboarding) have an increased risk of a subdural hematoma. […] Taking blood thinners: Blood thinners (anticoagulants) slow down your clotting process or prevent blood from clotting at all. If your blood doesnt clot, bleeding around your brain can be severe and long-lasting, even after a relatively minor injury.

• #1 Subdural Hematoma: What It Is, Causes, Symptoms & Treatment

  https://my.clevelandclinic.org/health/diseases/21183-subdural-hematoma

  A subdural hematoma is a type of bleeding inside your head. It happens when blood collects under the dura mater, one of the layers of tissue that protect your brain. It most often happens from a head injury and can be fatal. […] A subdural hematoma develops from a tear in a blood vessel. Blood leaks out of the torn vessel into the space between your dura mater and your arachnoid mater. Active bleeding into this space is called a subdural hemorrhage. A buildup of blood is a subdural hematoma. […] What causes subdural hematomas? Head injuries cause most subdural hematomas. Examples of how this could happen include: Falling and hitting your head. Taking a blow to your head in a car or bike accident. Hitting your head while playing sports. Getting a head injury from an assault or physical abuse.

• #1 Intracranial Hemorrhage – StatPearls – NCBI Bookshelf

  https://www.ncbi.nlm.nih.gov/books/NBK470242/

  Subdural hemorrhage occurs when blood enters the subdural space, which is anatomically the arachnoid space. Commonly, subdural hemorrhage occurs after a vessel traversing between the brain and skull is stretched, broken, or torn and begins to bleed into the subdural space. […] A subarachnoid hemorrhage refers to bleeding into the subarachnoid space. Subarachnoid hemorrhage is divided into traumatic versus non-traumatic subarachnoid hemorrhage. A second categorization divides subarachnoid hemorrhage into an aneurysmal and non-aneurysmal subarachnoid hemorrhage. Aneurysmal subarachnoid hemorrhage occurs after the rupture of a cerebral aneurysm. […] Non-aneurysmal subarachnoid bleeding most commonly occurs after trauma with a blunt head injury with or without penetrating trauma or sudden acceleration changes to the head. […] Intraparenchymal hemorrhage is bleeding into the brain parenchyma. A wide variety of reasons cause hemorrhage, including, but not limited to, hypertension, arteriovenous malformation (AVM), amyloid angiopathy, aneurysm rupture, tumor, coagulopathy, infection, vasculitis, and trauma.

• #1 Cerebral Palsy from Intracranial Hemorrhages (Brain Bleeds) | Michigan Cerebral Palsy Attorneys

  https://www.michigancerebralpalsyattorneys.com/causes-and-risk-factors-of-cerebral-palsy/birth-trauma/cerebral-palsy-from-intracranial-hemorrhages-brain-bleeds/

  An intracranial hemorrhage, also known as a brain bleed, is a brain injury in which bleeding within the skull or brain damages the areas of the brain that control mental and physical development. […] A large number of brain bleeds occur as a result of mismanaged labor and delivery, and they often result in irreparable brain damage with lifelong limitations to cognitive and motor function. […] There are five types of intracranial hemorrhages inflicted around the time of birth that can cause cerebral palsy, permanent brain damage, or even death: […] Cerebral Hemorrhage: A type of stroke where bleeding occurs within the brain itself. […] Subarachnoid hemorrhage: Typically occurring in full term babies, this type of hemorrhage causes bleeding in the area between the innermost membranes that cover the brain.

• #1 Subarachnoid and Intracranial Hemorrhages | Neurosurgery and Endovascular Associates

  https://www.neuroendomke.com/brain-tumors-other-brain-disorders-and-brain-surgery/subarachnoid-and-intracranial-hemorrhages/

  Intracranial hemorrhage, also known as intracerebral hemorrhage, is a form of a stroke where there is bleeding on the brain. […] If an intracranial aneurysm ruptures, it can result in a subarachnoid hemorrhage. […] Intracranial hemorrhage may be caused by trauma, high blood pressure, or a vascular abnormality.

• #1

  https://consensus.app/questions/causes-of-brain-bleed/

  Traumatic brain injury (TBI) is a significant cause of intracerebral hemorrhage and is often associated with coagulopathy. […] This condition involves a transition from a hypercoagulable to a hypocoagulable state, leading to persistent bleeding and poor clinical outcomes. […] The brain’s unique procoagulant environment, enriched with key procoagulant molecules, contributes to this coagulopathy. […] Blood-brain barrier (BBB) dysfunction is a critical factor in the progression of intracerebral hemorrhage. […] After the initial bleed, continued bleeding and hematoma expansion can occur, exacerbating brain injury. […] Blood components and the inflammatory response to these components play significant roles in BBB dysfunction. […] Brain bleeds can result from various causes, including trauma, chronic hypertension, neurodegenerative diseases, and coagulopathies. […] Understanding the underlying mechanisms and risk factors is essential for developing effective treatments and improving patient outcomes.

• #1 Epidural hematoma: MedlinePlus Medical EncyclopediaLock

  https://medlineplus.gov/ency/article/001412.htm

  An EDH is often caused by a skull fracture during childhood or adolescence. The membrane covering the brain is not as closely attached to the skull as it is in older people and children younger than 2 years. Therefore, this type of bleeding is more common in young people. […] An EDH can also occur due to rupture of a blood vessel, usually an artery. The blood vessel then bleeds into the space between the dura and the skull. […] The affected vessels are often torn by skull fractures. The fractures are most often the result of a severe head injury, such as those caused by motorcycle, bicycle, skateboard, snow boarding, or automobile accidents. Less severe blunt trauma, such as getting hit by a baseball, can also result in an EDH. […] Rapid bleeding causes a collection of blood (hematoma) that presses on the brain. The pressure inside the head (intracranial pressure, ICP) increases quickly. This pressure may result in more brain injury.

• #1 Etiology and clinical presentation of intracerebral hemorrhage | STROKE MANUAL

  https://www.stroke-manual.com/intracerebral-hemorrhage-etiology-clinical-presentation/

  hypertensive arteriolopathy is the most common cause of primary intracerebral hemorrhage (ICH) […] longitudinal studies confirm that hypertension increases ICH risk by approximately 3.5 to 4 times, depending on BP severity […] hypertension leads to bleeding by two mechanisms: rupture of an artery affected by chronic hypertension and acute or subacute severe hypertension leading to rupture of a previously unaffected artery (malignant hypertension) […] typical localization: basal ganglia, thalamus, cerebellum, pons […] chronic hypertension induces arteriole thickening (hypertrophy), lipohyalinosis (protein deposition), and fibrinoid necrosis, making vessels prone to rupture […] findings suggesting hypertensive etiology: history of hypertension, typical ICH localization, absence of any other apparent cause of bleeding, left ventricular hypertrophy, leukoaraiosis on CT/MRI, hypertensive retinopathy

• #2 Intracranial Hematoma Diagnosis & Treatment – NYC | Columbia Neurosurgery in New York City

  https://www.neurosurgery.columbia.edu/patient-care/conditions/intracranial-hematoma

  An intracranial hematoma is a collection of clotted blood that forms inside the skull after an injury. […] A hematoma may put pressure on tissue of the brain, causing injury. Physicians categorize hematomas according to the onset and volume of intracranial bleeding. […] Intracranial hematomas may occur with moderate or severe injuries to the head, such as those sustained during a motor vehicle accident, a bicycle accident, a fall, or an act of violence. […] Some individuals are prone to developing hematomas especially subdural hematomas after apparently minor head injuries.

• #2 Intracranial Hemorrhage – StatPearls – NCBI Bookshelf

  https://www.ncbi.nlm.nih.gov/books/NBK470242/

  Intracranial hemorrhage comprises 4 broad types of hemorrhage, including epidural hemorrhage, subdural hemorrhage, subarachnoid hemorrhage, and intraparenchymal hemorrhage. Each type of hemorrhage arises from distinct etiologies, leading to variable clinical findings, prognosis, and outcomes. […] An epidural hematoma is arterial or venous in origin. The classical arterial epidural hematoma occurs after blunt trauma to the head, typically the temporal region. This type of bleeding may also occur after a penetrating head injury. Typically, a skull fracture with damage to the middle meningeal artery causes arterial bleeding into the potential epidural space. […] A venous epidural hematoma occurs after a skull fracture, and the venous bleeding from the skull fracture fills the epidural space.

• #2 Brain Hemorrhage: Symptoms & Causes | NewYork-Presbyterian

  https://www.nyp.org/neuro/brain-hemorrhage

  What causes a brain hemorrhage? […] The most common causes of a brain hemorrhage are: […] Head trauma – Injuries to the head are the most common reason for a brain hemorrhage to occur in people younger than 50 years old […] High blood pressure – High blood pressure, if left untreated, can weaken the blood vessel walls and lead to a brain hemorrhage […] Aneurysm – An aneurysm occurs when a blood vessel wall weakens and swells. A burst aneurysm can cause bleeding in the brain and lead to stroke […] Blood vessel abnormalities – An arteriovenous malformation (AVM) causes blood vessels in and around the brain to become weak. It may be present at birth but is only discoverable when symptoms appear […] Amyloid angiopathy – This blood irregularity usually occurs among older adults with high blood pressure. It may produce small bleeds that go unnoticed until finally causing a larger bleed

• #2 Intracranial hematoma | Beacon Health System

  https://www.beaconhealthsystem.org/library/diseases-and-conditions/intracranial-hematoma?content_id=CON-20301702

  This collection of blood within the skull is a serious, possibly life-threatening, complication of a head injury. […] An intracranial hematoma is a collection of blood within the skull. The blood may collect in the brain tissue or underneath the skull, pressing on the brain. It’s usually caused by a blood vessel that bursts in the brain. It also may be caused by a head injury due to a car accident or fall. […] The most common cause of an intracranial hematoma is a head injury. A head injury that causes bleeding within the skull may result from motor vehicle or bicycle accidents, falls, assaults, and sports injuries. […] A head injury can cause an intracranial hematoma even if there’s no open wound, bruise or other obvious damage. […] What happens in the brain to cause bleeding varies based on the type of hematoma. There are three categories of hematoma subdural hematoma, epidural hematoma and intracerebral hematoma.

• #2 Intracranial Hemorrhage – StatPearls – NCBI Bookshelf

  https://www.ncbi.nlm.nih.gov/books/NBK470242/

  Subdural hemorrhage occurs when blood enters the subdural space, which is anatomically the arachnoid space. Commonly, subdural hemorrhage occurs after a vessel traversing between the brain and skull is stretched, broken, or torn and begins to bleed into the subdural space. […] A subarachnoid hemorrhage refers to bleeding into the subarachnoid space. Subarachnoid hemorrhage is divided into traumatic versus non-traumatic subarachnoid hemorrhage. A second categorization divides subarachnoid hemorrhage into an aneurysmal and non-aneurysmal subarachnoid hemorrhage. Aneurysmal subarachnoid hemorrhage occurs after the rupture of a cerebral aneurysm. […] Non-aneurysmal subarachnoid bleeding most commonly occurs after trauma with a blunt head injury with or without penetrating trauma or sudden acceleration changes to the head. […] Intraparenchymal hemorrhage is bleeding into the brain parenchyma. A wide variety of reasons cause hemorrhage, including, but not limited to, hypertension, arteriovenous malformation (AVM), amyloid angiopathy, aneurysm rupture, tumor, coagulopathy, infection, vasculitis, and trauma.

• #2 Intracerebral Hemorrhage – StatPearls – NCBI Bookshelf

  https://www.ncbi.nlm.nih.gov/books/NBK553103/

  Over 60% of primary bleeds are related to hypertension, and these hematomas are most commonly seen in the posterior fossa, pons, basal ganglia, and thalamus. […] Lobar hemorrhages in older patients are often the distinguishing feature of amyloid angiopathy. […] In contrast, when an ICH is due to an underlying structural pathology, such as vascular anomalies or malignant tissue, they are categorized as secondary ICH. […] Vascular lesions include arteriovenous malformations, cavernous angiomas, cerebral aneurysms, and aorto-venous fistulae, and these are often the cause of ICH in the young, otherwise healthy, population. […] Cerebral hematomas may also be secondary to a primary or metastatic lesion or even the hemorrhagic conversion of a recent ischaemic infarct. […] Further, congenial and acquired bleeding diathesis is a common factor in ICHs, becoming more common due to the large population of adults on an anticoagulant (i.e., warfarin) and antiplatelet (aspirin) therapy.

• #2 Intracerebral hemorrhage – Wikipedia

  https://en.wikipedia.org/wiki/Intracerebral_hemorrhage

  Intracerebral bleeds are the second most common cause of stroke, accounting for 10% of hospital admissions for stroke. High blood pressure raises the risks of spontaneous intracerebral hemorrhage by two to six times. More common in adults than in children, intraparenchymal bleeds are usually due to penetrating head trauma, but can also be due to depressed skull fractures. Acceleration-deceleration trauma, rupture of an aneurysm or arteriovenous malformation (AVM), and bleeding within a tumor are additional causes. Amyloid angiopathy is not an uncommon cause of intracerebral hemorrhage in patients over the age of 55. A very small proportion is due to cerebral venous sinus thrombosis. […] Hypertension is the strongest risk factor associated with intracerebral hemorrhage and long term control of elevated blood pressure has been shown to reduce the incidence of hemorrhage. Cerebral amyloid angiopathy, a disease characterized by deposition of amyloid beta peptides in the walls of the small blood vessels of the brain, leading to weakened blood vessel walls and an increased risk of bleeding; is also an important risk factor for the development of intracerebral hemorrhage. Other risk factors include advancing age (usually with a concomitant increase of cerebral amyloid angiopathy risk in the elderly), use of anticoagulants or antiplatelet medications, the presence of cerebral microbleeds, chronic kidney disease, and low low density lipoprotein (LDL) levels (usually below 70). The direct oral anticoagulants (DOACs) such as the factor Xa inhibitors or direct thrombin inhibitors are thought to have a lower risk of intracerebral hemorrhage as compared to the vitamin K antagonists such as warfarin. […] Traumatic intracerebral hematomas are divided into acute and delayed. Acute intracerebral hematomas occur at the time of the injury while delayed intracerebral hematomas have been reported from as early as 6 hours post injury to as long as several weeks.

• #2 Intracerebral hemorrhage | Radiology Reference Article | Radiopaedia.org

  https://radiopaedia.org/articles/intracerebral-hemorrhage-1?lang=us

  Intracerebral hemorrhages arise from rupture of a small blood vessel within the brain parenchyma or, less commonly, of a blood vessel adjacent to the parenchyma (e.g. jet hematoma). […] Non-traumatic intracerebral hemorrhages were historically etiologically divided according to whether or not they have an underlying structural lesion or bleeding diathesis. […] Spontaneous intracerebral hemorrhage presumed due to small vessel disease (formerly primary intracerebral hemorrhage) includes hypertensive microangiopathy and cerebral amyloid angiopathy. […] Secondary intracerebral hemorrhage: hemorrhage complicating some underlying structural lesion or bleeding diathesis includes hemorrhagic transformation of infarct (ischemic stroke), vascular malformation (e.g., brain arteriovenous malformation, cerebral cavernous malformation), tumor (e.g., metastases, glioblastoma), cerebral venous thrombosis, and bleeding diathesis (e.g., anticoagulation therapy). […] Etiologies more commonly seen in the pediatric or young adult demographic are discussed separately: see stroke in children and young adults.

• #2 Etiology and clinical presentation of intracerebral hemorrhage | STROKE MANUAL

  https://www.stroke-manual.com/intracerebral-hemorrhage-etiology-clinical-presentation/

  bleeding into a preexisting lesion includes tumors, venous infarction, hemorrhagic arterial infarction, granuloma, and abscess […] vascular malformations such as aneurysm and vascular malformations are also causes of intracranial hematoma […] coagulopathy, including anticoagulants and antiplatelet therapy, can lead to ICH […] abnormal vessels (angiopathy) like cerebral amyloid angiopathy (CAA) and intracranial artery dissection contribute to the risk of ICH […] head injury can occasionally cause spontaneous hematoma […] drugs, particularly sympathomimetic drugs, significantly increase the risk of ICH by causing severe acute hypertension, vasospasm, and vessel fragility.

• #2 Intracranial hemorrhage – Wikipedia

  https://en.wikipedia.org/wiki/Intracranial_hemorrhage

  Additional risk factors that increase the likelihood of intracranial hemorrhage include smoking, heavy alcohol consumption, advanced age, a family history of stroke, diabetes, hyperlipidemia, obesity, and sedentary lifestyle. Hypertension remains the most prevalent and well-established risk factor, contributing to over 60% of primary bleeds. […] Intracranial bleed in hypertensive subjects usually occurs at 50 to 60 years of life with 30 to 50% chance of death. Such hemorrhages are typically located in the basal ganglia, cerebellum, or occipital lobes. […] Cerebral amyloid angiopathy (CAA) is the deposition of Amyloid beta peptide protein within the brain. Accumulation of such peptide proteins within the walls of the arteries can cause weakening of the walls and causes microhemorrhages, SAH within the cerebral sulci or large cerebral intraparenchymal bleed.

• #2

  https://www.nhs.uk/conditions/subdural-haematoma/causes/

  Subdural haematomas are usually caused by a head injury. […] Head injuries that cause subdural haematomas are often severe, such as from a car crash, fall or violent assault. […] Minor bumps to the head can also lead to a subdural haematoma in a few cases. […] A subdural haematoma develops if there’s bleeding into the space between the skull and the brain (the subdural space) caused by damage to the blood vessels of the brain or the brain itself. […] Chronic subdural haematomas form gradually a few weeks after a minor head injury. […] These are more commonly seen in older people and those who take anticoagulant („blood-thinning”) medicine, drink excessively, or have another medical condition. […] Most chronic subdural haematomas affect people over 60, and the chances of developing one increase with age.

• #2 Epidural hematoma: MedlinePlus Medical EncyclopediaLock

  https://medlineplus.gov/ency/article/001412.htm

  An EDH is often caused by a skull fracture during childhood or adolescence. The membrane covering the brain is not as closely attached to the skull as it is in older people and children younger than 2 years. Therefore, this type of bleeding is more common in young people. […] An EDH can also occur due to rupture of a blood vessel, usually an artery. The blood vessel then bleeds into the space between the dura and the skull. […] The affected vessels are often torn by skull fractures. The fractures are most often the result of a severe head injury, such as those caused by motorcycle, bicycle, skateboard, snow boarding, or automobile accidents. Less severe blunt trauma, such as getting hit by a baseball, can also result in an EDH. […] Rapid bleeding causes a collection of blood (hematoma) that presses on the brain. The pressure inside the head (intracranial pressure, ICP) increases quickly. This pressure may result in more brain injury.

• #2 Intracerebral Hemorrhage – StatPearls – NCBI Bookshelf

  https://www.ncbi.nlm.nih.gov/books/NBK553103/

  Non-traumatic Intracerebral hemorrhage can be divided into primary and secondary, where primary bleeds account for 85% of all ICH and are related to chronic hypertension or amyloid angiopathy. […] Secondary hemorrhage is considered to be related but not limited to bleeding diathesis (iatrogenic, congenital, acquired), vascular malformations, neoplasms, hemorrhagic conversion of an ischaemic stroke, and drug abuse. […] Primary or spontaneous ICH accounts for over 85% of hemorrhagic strokes. […] A primary ICH diagnosis is often one of exclusion where no other pathological or structural cause is found and is supported by a history of chronic hypertension, increased age, and location of the clot. […] In patients with chronic arterial hypertension, it is thought that lipohyalinosis and degenerative changes of penetrating arterioles result in Charcot-Bouchard aneurysms in the small arterial vessels supplying deep cerebral structures.

• #2 Infant Intracranial Hemorrhages (Brain Bleeds): Signs, Symptoms, Causes | ABC Law Centers: Birth Injury Lawyers

  https://www.abclawcenters.com/practice-areas/infant-intracranial-hemorrhages/

  Infant intracranial hemorrhages (otherwise known as brain bleeds) are birth injuries that range from minor to extremely severe. They can be caused by birth asphyxia (oxygen deprivation during or around the time of birth) or birth trauma (injuries caused by excessive mechanical force to the baby’s head). […] Intraventricular hemorrhage (IVH) is a serious type of intracranial hemorrhage that occurs when there is bleeding in the brain’s ventricular system, where cerebrospinal fluid is produced. It is usually seen in premature infants and infants with low birth weight, because the blood vessels in their brains are not fully developed, and are therefore weaker than that of babies born at term. Oxygen deprivation and birth trauma can also contribute to intraventricular hemorrhage. […] Common risk factors for and causes of intracranial hemorrhages in babies include: Macrosomia: a pregnancy condition in which the fetus is larger than average for the gestational age, which can make vaginal birth dangerous.

• #2 Intracerebral Hemorrhage (Brain bleeds) Causes, Symptoms and Treatment | MedPark Hospital

  https://www.medparkhospital.com/en-US/disease-and-treatment/intracerebral-hemorrhage

  Smoking, heavy alcohol consumption, and narcotics such as cocaine are all causes of cerebral aneurysms, which deteriorate and cause brain bleeding. […] Eclampsia and seizures occur in pregnant women and cause arterial spasms, unconsciousness, and bleeding in the brain. […] Neonatal intraventricular hemorrhage is common in premature babies weighing less than 1,500 grams. Neonatal intraventricular hemorrhage is bleeding into the ventricles that can cause disabilities and death. […] Abnormal collagen formation within the artery walls will gradually weaken the walls causing artery walls to tear and bleed.

• #2 Intracranial Hemorrhage: Background, Pathophysiology, Epidemiology

  https://emedicine.medscape.com/article/1163977-overview

  Intracerebral hemorrhage most commonly results from hypertensive damage to blood vessel walls (eg, hypertension, eclampsia, drug abuse), but it also may be due to autoregulatory dysfunction with excessive cerebral blood flow (eg, reperfusion injury, hemorrhagic transformation, cold exposure), rupture of an aneurysm or arteriovenous malformation (AVM), arteriopathy (eg, cerebral amyloid angiopathy, moyamoya), altered hemostasis (eg, thrombolysis, anticoagulation, bleeding diathesis), hemorrhagic necrosis (eg, tumor, infection), or venous outflow obstruction (eg, cerebral venous thrombosis). […] Nonpenetrating and penetrating cranial trauma are also common causes of intracerebral hemorrhage. […] Chronic hypertension produces a small vessel vasculopathy characterized by lipohyalinosis, fibrinoid necrosis, and development of Charcot-Bouchard aneurysms, affecting penetrating arteries throughout the brain including lenticulostriates, thalamoperforators, paramedian branches of the basilar artery, superior cerebellar arteries, and anterior inferior cerebellar arteries.

• #2 What Are the Chances of Surviving Bleeding in the Brain?

  https://www.medicinenet.com/chances_of_surviving_bleeding_in_the_brain/article.htm

  Brain hemorrhage predominantly results from the irritation of brain tissues, leading to swelling or cerebral palsy. […] Swelling increases pressure on the arteries, causing them to burst and create hematomas. This blocks blood flow and deprives oxygen to the affected parts of the brain, eventually damaging and killing brain cells. Hematomas occur when blood collects and turns into a mass that can result in excess pressure and/or swelling in the brain. […] The causes of brain hemorrhage may include but are not limited to: Long-term hypertension (high blood pressure), Trauma or injury (a blow to the head, a fall, or an accident), Atherosclerosis (hardening, thickening, and narrowing of the arteries due to accumulation of fatty deposits), Aneurysms (an abnormal bulge that weaken the walls of blood vessels), Blood clots, Malformations in the brain arteries and blood vessels, Amyloid angiopathy (deposition of amyloid on the walls of the arteries in the brain related to high blood pressure and aging), Bleeding disorders (sickle cell anemia and hemophilia), Brain tumors, Liver diseases, Smoking, Heavy alcohol use, Use of illegal drugs (cocaine), Conditions related to pregnancy or childbirth (eclampsia, postpartum vasculopathy, and neonatal intraventricular hemorrhage).

• #3 Intracranial hematoma | Beacon Health System

  https://www.beaconhealthsystem.org/library/diseases-and-conditions/intracranial-hematoma?content_id=CON-20301702

  This collection of blood within the skull is a serious, possibly life-threatening, complication of a head injury. […] An intracranial hematoma is a collection of blood within the skull. The blood may collect in the brain tissue or underneath the skull, pressing on the brain. It’s usually caused by a blood vessel that bursts in the brain. It also may be caused by a head injury due to a car accident or fall. […] The most common cause of an intracranial hematoma is a head injury. A head injury that causes bleeding within the skull may result from motor vehicle or bicycle accidents, falls, assaults, and sports injuries. […] A head injury can cause an intracranial hematoma even if there’s no open wound, bruise or other obvious damage. […] What happens in the brain to cause bleeding varies based on the type of hematoma. There are three categories of hematoma subdural hematoma, epidural hematoma and intracerebral hematoma.

• #3 Intracranial Hematomas – Injuries and Poisoning – Merck Manual Consumer Version

  https://www.merckmanuals.com/home/injuries-and-poisoning/head-injuries/intracranial-hematomas

  Intracranial hematomas form when a head injury causes blood to accumulate within the brain or between the brain and the skull. […] Intracranial hematomas usually result from a head injury but sometimes result from spontaneous bleeding. […] Epidural hematomas are caused by bleeding from an artery or a large vein (venous sinus) located between the skull and the outer layer of tissue covering the brain. Bleeding often occurs when a skull fracture tears the blood vessel. […] Subdural hematomas are usually caused by bleeding from veins, including the bridging veins, located between the outer and middle layers of tissue covering the brain (meninges). Occasionally, subdural hematomas are caused by bleeding from arteries. […] Acute or subacute subdural hematomas may be caused by rapid bleeding after a severe head injury.

• #3 Brain Hemorrhage (Bleeding): Causes, Symptoms, Treatments

  https://www.webmd.com/brain/brain-hemorrhage-bleeding-causes-symptoms-treatments

  What Causes Brain Hemorrhage? […] There are several causes of brain hemorrhages. The most common include: […] Head trauma. Injury is the most common cause of brain bleeds in people younger than age 50. […] High blood pressure. Over time, this ongoing condition can weaken the walls of your blood vessels. Untreated high blood pressure is a major preventable cause of brain hemorrhages. […] Aneurysm. A weakening in one of your blood vessel walls can make it swell. It can burst and bleed into your brain, leading to a stroke. […] Blood vessel abnormalities (arteriovenous malformations). You might be born with weakened blood vessels in and around your brain. But you might not know about them unless you start having symptoms. […] Amyloid angiopathy. This is an abnormality of the blood vessel walls that sometimes occurs with aging and high blood pressure. It may cause many small, unnoticed bleeds before causing a large one.

• #3 Intracranial Hemorrhage – StatPearls – NCBI Bookshelf

  https://www.ncbi.nlm.nih.gov/books/NBK470242/

  Intracranial hemorrhage comprises 4 broad types of hemorrhage, including epidural hemorrhage, subdural hemorrhage, subarachnoid hemorrhage, and intraparenchymal hemorrhage. Each type of hemorrhage arises from distinct etiologies, leading to variable clinical findings, prognosis, and outcomes. […] An epidural hematoma is arterial or venous in origin. The classical arterial epidural hematoma occurs after blunt trauma to the head, typically the temporal region. This type of bleeding may also occur after a penetrating head injury. Typically, a skull fracture with damage to the middle meningeal artery causes arterial bleeding into the potential epidural space. […] A venous epidural hematoma occurs after a skull fracture, and the venous bleeding from the skull fracture fills the epidural space.

• #3 Intracerebral Hemorrhage – StatPearls – NCBI Bookshelf

  https://www.ncbi.nlm.nih.gov/books/NBK553103/

  Non-traumatic Intracerebral hemorrhage can be divided into primary and secondary, where primary bleeds account for 85% of all ICH and are related to chronic hypertension or amyloid angiopathy. […] Secondary hemorrhage is considered to be related but not limited to bleeding diathesis (iatrogenic, congenital, acquired), vascular malformations, neoplasms, hemorrhagic conversion of an ischaemic stroke, and drug abuse. […] Primary or spontaneous ICH accounts for over 85% of hemorrhagic strokes. […] A primary ICH diagnosis is often one of exclusion where no other pathological or structural cause is found and is supported by a history of chronic hypertension, increased age, and location of the clot. […] In patients with chronic arterial hypertension, it is thought that lipohyalinosis and degenerative changes of penetrating arterioles result in Charcot-Bouchard aneurysms in the small arterial vessels supplying deep cerebral structures.

• #3 Brain Hemorrhage: Symptoms & Causes | NewYork-Presbyterian

  https://www.nyp.org/neuro/brain-hemorrhage

  What causes a brain hemorrhage? […] The most common causes of a brain hemorrhage are: […] Head trauma – Injuries to the head are the most common reason for a brain hemorrhage to occur in people younger than 50 years old […] High blood pressure – High blood pressure, if left untreated, can weaken the blood vessel walls and lead to a brain hemorrhage […] Aneurysm – An aneurysm occurs when a blood vessel wall weakens and swells. A burst aneurysm can cause bleeding in the brain and lead to stroke […] Blood vessel abnormalities – An arteriovenous malformation (AVM) causes blood vessels in and around the brain to become weak. It may be present at birth but is only discoverable when symptoms appear […] Amyloid angiopathy – This blood irregularity usually occurs among older adults with high blood pressure. It may produce small bleeds that go unnoticed until finally causing a larger bleed

• #3 Intracerebral Hemorrhage – StatPearls – NCBI Bookshelf

  https://www.ncbi.nlm.nih.gov/books/NBK553103/

  Over 60% of primary bleeds are related to hypertension, and these hematomas are most commonly seen in the posterior fossa, pons, basal ganglia, and thalamus. […] Lobar hemorrhages in older patients are often the distinguishing feature of amyloid angiopathy. […] In contrast, when an ICH is due to an underlying structural pathology, such as vascular anomalies or malignant tissue, they are categorized as secondary ICH. […] Vascular lesions include arteriovenous malformations, cavernous angiomas, cerebral aneurysms, and aorto-venous fistulae, and these are often the cause of ICH in the young, otherwise healthy, population. […] Cerebral hematomas may also be secondary to a primary or metastatic lesion or even the hemorrhagic conversion of a recent ischaemic infarct. […] Further, congenial and acquired bleeding diathesis is a common factor in ICHs, becoming more common due to the large population of adults on an anticoagulant (i.e., warfarin) and antiplatelet (aspirin) therapy.

• #3 Intracranial hemorrhage – Wikipedia

  https://en.wikipedia.org/wiki/Intracranial_hemorrhage

  Intracranial hemorrhage (ICH) may be classified as either traumatic or non-traumatic (spontaneous). Traumatic causes include head trauma resulting from falls, vehicular accidents, or physical assault. Non-traumatic causes are more varied and often related to underlying conditions. Chronic hypertension is the most common non-traumatic cause, particularly in deep brain structures such as the basal ganglia, thalamus, pons, and posterior fossa. Other spontaneous causes include cerebral amyloid angiopathy, especially among the elderly, as well as bleeding disorders such as hemophilia and thrombocytopenia, vascular malformations like arteriovenous malformation (AVMs), and brain tumors. […] The use of anticoagulant or antiplatelet medications, such as warfarin and aspirin, has been associated with increased hematoma volume and expansion.

• #3 Etiology of tumor-related intracranial hemorrhage (Chapter 3) – Intracerebral Hemorrhage

  https://www.cambridge.org/core/books/intracerebral-hemorrhage/etiology-of-tumorrelated-intracranial-hemorrhage/C9E1489836DF96684EA605AEDCCF0F8E

  Cancer-related intracerebral bleeding is an uncommon cause of hemorrhage and represents only a fraction of all non-traumatic intracranial hemorrhages (ICHs). The mechanisms of intratumoral hemorrhage remain unclear, but include tumor necrosis, rupture of tumor blood vessels and invasion of parenchymal blood vessels by tumor. […] Metastatic brain tumors can cause intracerebral hemorrhage. Brain metastases from any primary tumor can cause bleeding, but the different primaries have a wide variability in their tendency to bleed. […] A tumor embolus may cause an aneurysm that can lead to potentially fatal intraparenchymal or subarachnoid hemorrhages. The clinical presentation of intratumoral hemorrhage is often indistinguishable from spontaneous ICH from more typical etiologies such as hypertension. […] The prognosis of a hemorrhagic neoplasm is primarily determined by the prognosis of the underlying malignancy.

• #3 Intracranial hemorrhage | Radiology Reference Article | Radiopaedia.org

  https://radiopaedia.org/articles/intracranial-haemorrhage?lang=us

  Intracranial hemorrhage is a collective term encompassing many different conditions characterized by the extravascular accumulation of blood within different intracranial spaces. […] Alternatively, intracranial hemorrhage can be thought of in terms of the underlying cause, although in most cases the same etiology can result in multiple different patterns of hemorrhage. […] trauma […] vascular malformation(s) […] tumor-related hemorrhage […] hypertensive hemorrhage […] cerebral amyloid angiopathy (CAA) […] cerebral venous thrombosis.

• #3 Brain Bleed (Intracranial Hemorrhage): Causes & Symptoms

  https://my.clevelandclinic.org/health/diseases/14480-brain-bleed-hemorrhage-intracranial-hemorrhage

  A brain bleed (intracranial hemorrhage) is a type of stroke that causes bleeding in your head. […] A leaky, broken or burst blood vessel causes a brain bleed. As a result, excess blood pools in your brain. A brain bleed can happen after: […] Brain bleeds are common after falls or traumatic injuries. They’re also common in people with unmanaged high blood pressure. […] The severity and outcome of a brain bleed depend on its cause, location inside of your skull, size of the bleed, the amount of time that passes between the bleed and treatment. […] A brain bleed can affect anyone at any age, from newborns to adults. It’s more common among adults over age 65. […] A brain bleed can be caused by a buildup of fatty deposits in your arteries (atherosclerosis), a blood clot, a weak spot in a blood vessel wall (cerebral aneurysm), or a leak from abnormally formed connections between arteries and veins (arteriovenous malformation, or AVM). […] If not treated quickly, a brain bleed can lead to permanent brain damage or death.

• #3 Intracerebral Hemorrhage – StatPearls – NCBI Bookshelf

  https://www.ncbi.nlm.nih.gov/books/NBK553103/

  Studies have elicited certain tendencies in the population that suffer ICHs, thereby hypothesizing both modifiable and non-modifiable risk factors. […] The latter include non-white ethnicity, older age, familial apolipoprotein syndromes, and being male. […] The radiological finding of cerebral amyloid angiopathy also increases the risk of both lobar and recurrent ICH. […] Uncontrolled or untreated hypertension is a modifiable risk factor that increases the risk of ICH by two in the aging population. […] Other adjustable risk factors include abuse of drugs such and alcohol, nicotine, and cocaine.

• #3 Subdural Hematoma: What It Is, Causes, Symptoms & Treatment

  https://my.clevelandclinic.org/health/diseases/21183-subdural-hematoma

  Age: People 65 and older and babies are more at risk for getting subdural hematomas. As you age, your brain shrinks inside your skull. The space between your skull and brain widens. This makes the tiny veins in the membranes between your skull and brain stretch. These thinned, stretched veins are more likely to tear, even if you experience a minor head injury. Babies dont have strong neck muscles to protect themselves from head trauma. When someone shakes a baby forcefully, they can develop a subdural hematoma (shaken baby syndrome). […] Playing contact sports: People who play high-impact or extreme sports (like football, rugby or snowboarding) have an increased risk of a subdural hematoma. […] Taking blood thinners: Blood thinners (anticoagulants) slow down your clotting process or prevent blood from clotting at all. If your blood doesnt clot, bleeding around your brain can be severe and long-lasting, even after a relatively minor injury.

• #3 Intracranial Hemorrhage – StatPearls – NCBI Bookshelf

  https://www.ncbi.nlm.nih.gov/books/NBK470242/

  Subdural hemorrhage occurs when blood enters the subdural space, which is anatomically the arachnoid space. Commonly, subdural hemorrhage occurs after a vessel traversing between the brain and skull is stretched, broken, or torn and begins to bleed into the subdural space. […] A subarachnoid hemorrhage refers to bleeding into the subarachnoid space. Subarachnoid hemorrhage is divided into traumatic versus non-traumatic subarachnoid hemorrhage. A second categorization divides subarachnoid hemorrhage into an aneurysmal and non-aneurysmal subarachnoid hemorrhage. Aneurysmal subarachnoid hemorrhage occurs after the rupture of a cerebral aneurysm. […] Non-aneurysmal subarachnoid bleeding most commonly occurs after trauma with a blunt head injury with or without penetrating trauma or sudden acceleration changes to the head. […] Intraparenchymal hemorrhage is bleeding into the brain parenchyma. A wide variety of reasons cause hemorrhage, including, but not limited to, hypertension, arteriovenous malformation (AVM), amyloid angiopathy, aneurysm rupture, tumor, coagulopathy, infection, vasculitis, and trauma.

• #3 Cerebral Palsy from Intracranial Hemorrhages (Brain Bleeds) | Michigan Cerebral Palsy Attorneys

  https://www.michigancerebralpalsyattorneys.com/causes-and-risk-factors-of-cerebral-palsy/birth-trauma/cerebral-palsy-from-intracranial-hemorrhages-brain-bleeds/

  Intraventricular hemorrhage: Because this hemorrhage causes bleeding into the brain’s ventricular system (where spinal fluid is produced), it is the most serious type of brain bleed. […] Subdural hemorrhage (or hematoma): Usually a result of strained deliveries, this hemorrhage occurs when a rupture takes place in the subdural space, or the area between the brain and the tissue that separates the brain from the skull. […] Cephalohematoma: Signified by a raised bump on the baby’s head, this hemorrhage occurs between the skull and its covering and can last anywhere from two weeks to several months. […] Subgaleal hemorrhage: This type of brain bleed occurs when a vein ruptures in the baby’s brain and bleeds into the space between the scalp and skull (the subgaleal space). […] Babies risk head trauma when they cannot fit through their mothers’ pelvises easily.

• #3 Intracerebral Hemorrhage (Brain bleeds) Causes, Symptoms and Treatment | MedPark Hospital

  https://www.medparkhospital.com/en-US/disease-and-treatment/intracerebral-hemorrhage

  Smoking, heavy alcohol consumption, and narcotics such as cocaine are all causes of cerebral aneurysms, which deteriorate and cause brain bleeding. […] Eclampsia and seizures occur in pregnant women and cause arterial spasms, unconsciousness, and bleeding in the brain. […] Neonatal intraventricular hemorrhage is common in premature babies weighing less than 1,500 grams. Neonatal intraventricular hemorrhage is bleeding into the ventricles that can cause disabilities and death. […] Abnormal collagen formation within the artery walls will gradually weaken the walls causing artery walls to tear and bleed.

• #3 Epidural hematoma: MedlinePlus Medical EncyclopediaLock

  https://medlineplus.gov/ency/article/001412.htm

  An EDH is often caused by a skull fracture during childhood or adolescence. The membrane covering the brain is not as closely attached to the skull as it is in older people and children younger than 2 years. Therefore, this type of bleeding is more common in young people. […] An EDH can also occur due to rupture of a blood vessel, usually an artery. The blood vessel then bleeds into the space between the dura and the skull. […] The affected vessels are often torn by skull fractures. The fractures are most often the result of a severe head injury, such as those caused by motorcycle, bicycle, skateboard, snow boarding, or automobile accidents. Less severe blunt trauma, such as getting hit by a baseball, can also result in an EDH. […] Rapid bleeding causes a collection of blood (hematoma) that presses on the brain. The pressure inside the head (intracranial pressure, ICP) increases quickly. This pressure may result in more brain injury.

• #3 Etiology and clinical presentation of intracerebral hemorrhage | STROKE MANUAL

  https://www.stroke-manual.com/intracerebral-hemorrhage-etiology-clinical-presentation/

  hypertensive arteriolopathy is the most common cause of primary intracerebral hemorrhage (ICH) […] longitudinal studies confirm that hypertension increases ICH risk by approximately 3.5 to 4 times, depending on BP severity […] hypertension leads to bleeding by two mechanisms: rupture of an artery affected by chronic hypertension and acute or subacute severe hypertension leading to rupture of a previously unaffected artery (malignant hypertension) […] typical localization: basal ganglia, thalamus, cerebellum, pons […] chronic hypertension induces arteriole thickening (hypertrophy), lipohyalinosis (protein deposition), and fibrinoid necrosis, making vessels prone to rupture […] findings suggesting hypertensive etiology: history of hypertension, typical ICH localization, absence of any other apparent cause of bleeding, left ventricular hypertrophy, leukoaraiosis on CT/MRI, hypertensive retinopathy

• #4 Subdural Hematoma: What It Is, Causes, Symptoms & Treatment

  https://my.clevelandclinic.org/health/diseases/21183-subdural-hematoma

  A subdural hematoma is a type of bleeding inside your head. It happens when blood collects under the dura mater, one of the layers of tissue that protect your brain. It most often happens from a head injury and can be fatal. […] A subdural hematoma develops from a tear in a blood vessel. Blood leaks out of the torn vessel into the space between your dura mater and your arachnoid mater. Active bleeding into this space is called a subdural hemorrhage. A buildup of blood is a subdural hematoma. […] What causes subdural hematomas? Head injuries cause most subdural hematomas. Examples of how this could happen include: Falling and hitting your head. Taking a blow to your head in a car or bike accident. Hitting your head while playing sports. Getting a head injury from an assault or physical abuse.

• #4 Epidural hematoma: MedlinePlus Medical EncyclopediaLock

  https://medlineplus.gov/ency/article/001412.htm

  An EDH is often caused by a skull fracture during childhood or adolescence. The membrane covering the brain is not as closely attached to the skull as it is in older people and children younger than 2 years. Therefore, this type of bleeding is more common in young people. […] An EDH can also occur due to rupture of a blood vessel, usually an artery. The blood vessel then bleeds into the space between the dura and the skull. […] The affected vessels are often torn by skull fractures. The fractures are most often the result of a severe head injury, such as those caused by motorcycle, bicycle, skateboard, snow boarding, or automobile accidents. Less severe blunt trauma, such as getting hit by a baseball, can also result in an EDH. […] Rapid bleeding causes a collection of blood (hematoma) that presses on the brain. The pressure inside the head (intracranial pressure, ICP) increases quickly. This pressure may result in more brain injury.

• #4 Intracranial Hemorrhage: Background, Pathophysiology, Epidemiology

  https://emedicine.medscape.com/article/1163977-overview

  Intracerebral hemorrhage most commonly results from hypertensive damage to blood vessel walls (eg, hypertension, eclampsia, drug abuse), but it also may be due to autoregulatory dysfunction with excessive cerebral blood flow (eg, reperfusion injury, hemorrhagic transformation, cold exposure), rupture of an aneurysm or arteriovenous malformation (AVM), arteriopathy (eg, cerebral amyloid angiopathy, moyamoya), altered hemostasis (eg, thrombolysis, anticoagulation, bleeding diathesis), hemorrhagic necrosis (eg, tumor, infection), or venous outflow obstruction (eg, cerebral venous thrombosis). […] Nonpenetrating and penetrating cranial trauma are also common causes of intracerebral hemorrhage. […] Chronic hypertension produces a small vessel vasculopathy characterized by lipohyalinosis, fibrinoid necrosis, and development of Charcot-Bouchard aneurysms, affecting penetrating arteries throughout the brain including lenticulostriates, thalamoperforators, paramedian branches of the basilar artery, superior cerebellar arteries, and anterior inferior cerebellar arteries.

• #4 Brain Hemorrhage: Causes, Symptoms & Treatment | Live Science

  https://www.livescience.com/54508-brain-hemorrhage.html

  A brain hemorrhage is bleeding in or around the brain. […] There are many causes of brain hemorrhaging. Some of them include a tangling of blood vessels, called an arteriovenous malformation (AVM); bleeding disorders; cerebral aneurysms; head injury; and the use of blood thinners. Drug use and smoking may also cause hemorrhages. […] A subarachnoid hemorrhage is usually caused by a rupture of an abnormal bulge in a blood vessel in your brain, according to the Mayo Clinic. This bulge is called a brain aneurysm. […] Brain hemorrhages often occur as a result of head trauma. […] For example, avoid drug use. Cocaine use increases the risk of stroke among young adults, according to the University of Texas Southwestern Medical Center. Smoking cigarettes has also been linked to an increased risk of brain hemorrhages.

• #4 Intracerebral Hemorrhage – StatPearls – NCBI Bookshelf

  https://www.ncbi.nlm.nih.gov/books/NBK553103/

  Studies have elicited certain tendencies in the population that suffer ICHs, thereby hypothesizing both modifiable and non-modifiable risk factors. […] The latter include non-white ethnicity, older age, familial apolipoprotein syndromes, and being male. […] The radiological finding of cerebral amyloid angiopathy also increases the risk of both lobar and recurrent ICH. […] Uncontrolled or untreated hypertension is a modifiable risk factor that increases the risk of ICH by two in the aging population. […] Other adjustable risk factors include abuse of drugs such and alcohol, nicotine, and cocaine.

• #4

  https://www.nhs.uk/conditions/subdural-haematoma/causes/

  This is thought to be because most people’s brains shrink to some degree as they get older. […] Drinking too much alcohol over a long period of time can also gradually cause the brain to shrink and make the brain’s blood vessels more vulnerable to damage. […] Taking medicine to reduce your risk of blood clots can increase your risk of developing a chronic subdural haematoma. […] This is because it means your blood clots less easily and any bleeding caused by a head injury is likely to be more severe. […] An increased risk of chronic subdural haematoma has also been linked with: epilepsy a condition that causes repeated fits (seizures), haemophilia a condition that stops your blood clotting properly, having a ventriculoperitoneal shunt a thin tube implanted in the brain to drain away any excess fluid to treat hydrocephalus, brain aneurysms a bulge in one of the brain’s blood vessels that can burst and cause bleeding on the brain, cancerous (malignant) brain tumours.

• #4 Etiology of tumor-related intracranial hemorrhage (Chapter 3) – Intracerebral Hemorrhage

  https://www.cambridge.org/core/books/intracerebral-hemorrhage/etiology-of-tumorrelated-intracranial-hemorrhage/C9E1489836DF96684EA605AEDCCF0F8E

  Cancer-related intracerebral bleeding is an uncommon cause of hemorrhage and represents only a fraction of all non-traumatic intracranial hemorrhages (ICHs). The mechanisms of intratumoral hemorrhage remain unclear, but include tumor necrosis, rupture of tumor blood vessels and invasion of parenchymal blood vessels by tumor. […] Metastatic brain tumors can cause intracerebral hemorrhage. Brain metastases from any primary tumor can cause bleeding, but the different primaries have a wide variability in their tendency to bleed. […] A tumor embolus may cause an aneurysm that can lead to potentially fatal intraparenchymal or subarachnoid hemorrhages. The clinical presentation of intratumoral hemorrhage is often indistinguishable from spontaneous ICH from more typical etiologies such as hypertension. […] The prognosis of a hemorrhagic neoplasm is primarily determined by the prognosis of the underlying malignancy.

• #4 Etiology and clinical presentation of intracerebral hemorrhage | STROKE MANUAL

  https://www.stroke-manual.com/intracerebral-hemorrhage-etiology-clinical-presentation/

  bleeding into a preexisting lesion includes tumors, venous infarction, hemorrhagic arterial infarction, granuloma, and abscess […] vascular malformations such as aneurysm and vascular malformations are also causes of intracranial hematoma […] coagulopathy, including anticoagulants and antiplatelet therapy, can lead to ICH […] abnormal vessels (angiopathy) like cerebral amyloid angiopathy (CAA) and intracranial artery dissection contribute to the risk of ICH […] head injury can occasionally cause spontaneous hematoma […] drugs, particularly sympathomimetic drugs, significantly increase the risk of ICH by causing severe acute hypertension, vasospasm, and vessel fragility.

• #4 Intracerebral Hemorrhage – AANS

  https://www.aans.org/patients/conditions-treatments/intracerebral-hemorrhage/

  Intracerebral hemorrhage (bleeding into the brain tissue) is the second most common cause of stroke (15-30% of strokes) and the most deadly. […] Blood vessels carry blood to and from the brain. Arteries or veins can rupture, either from abnormal pressure or abnormal development or trauma. […] Hypertension: chronic high blood pressure causes changes to the arteries of the brain which can make them much more likely to rupture. […] Age: more common after age of 55, with buildup of protein in walls of arteries called amyloid angiopathy. […] Gender: more common in men. […] Race: affects African Americans and Asians more than whites; likely related to higher prevalence of Hypertension in those races. […] Previous history of stroke: increases risk 23 times. […] Alcohol use and street drugs: cocaine, amphetamines increases risk. […] Liver disease: increases risk due to issues with blood clotting. […] Use of blood thinners. […] Primary brain causes: tumors, vascular anomalies, infection and venous sinus thrombosis.

• #4 Subdural Hematoma: Causes, Types, Symptoms, Risks & Recovery

  https://www.webmd.com/brain/subdural-hematoma-symptoms-causes-treatments

  Subdural hematomas are usually caused by a head injury from a fall, motor vehicle collision, or an assault. The sudden blow to the head tears blood vessels that run along the surface of the brain. This is referred to as an acute subdural hematoma. […] People with a bleeding disorder or those who take blood thinners are also more likely to develop a subdural hematoma. A relatively minor head injury can cause the condition in people with a bleeding tendency. Finally, people with alcohol use disorder have a higher risk of developing a subdural hematoma, as alcohol can cause the brain to shrink, weakening the blood vessels in the tissues surrounding it. […] In a chronic subdural hematoma, small veins on the outer surface of the brain may tear, causing bleeding in the subdural space. Symptoms may not show up for several days or weeks. […] Elderly people are at a higher risk for chronic subdural hematoma because natural age-related brain shrinkage causes these tiny veins to stretch and become more vulnerable to tearing.

• #4 Intracranial Hemorrhage – StatPearls – NCBI Bookshelf

  https://www.ncbi.nlm.nih.gov/books/NBK470242/

  Intracranial hemorrhage comprises 4 broad types of hemorrhage, including epidural hemorrhage, subdural hemorrhage, subarachnoid hemorrhage, and intraparenchymal hemorrhage. Each type of hemorrhage arises from distinct etiologies, leading to variable clinical findings, prognosis, and outcomes. […] An epidural hematoma is arterial or venous in origin. The classical arterial epidural hematoma occurs after blunt trauma to the head, typically the temporal region. This type of bleeding may also occur after a penetrating head injury. Typically, a skull fracture with damage to the middle meningeal artery causes arterial bleeding into the potential epidural space. […] A venous epidural hematoma occurs after a skull fracture, and the venous bleeding from the skull fracture fills the epidural space.

• #4 Etiology and clinical presentation of intracerebral hemorrhage | STROKE MANUAL

  https://www.stroke-manual.com/intracerebral-hemorrhage-etiology-clinical-presentation/

  hypertensive arteriolopathy is the most common cause of primary intracerebral hemorrhage (ICH) […] longitudinal studies confirm that hypertension increases ICH risk by approximately 3.5 to 4 times, depending on BP severity […] hypertension leads to bleeding by two mechanisms: rupture of an artery affected by chronic hypertension and acute or subacute severe hypertension leading to rupture of a previously unaffected artery (malignant hypertension) […] typical localization: basal ganglia, thalamus, cerebellum, pons […] chronic hypertension induces arteriole thickening (hypertrophy), lipohyalinosis (protein deposition), and fibrinoid necrosis, making vessels prone to rupture […] findings suggesting hypertensive etiology: history of hypertension, typical ICH localization, absence of any other apparent cause of bleeding, left ventricular hypertrophy, leukoaraiosis on CT/MRI, hypertensive retinopathy

• #4

  https://step1.medbullets.com/neurology/113018/intracranial-hemorrhage

  Most commonly, subarachnoid hemorrhage is due to arterial aneurysm rupture in the subarachnoid space, which can result from traumatic causes or non-traumatic causes (spontaneous rupture). […] Hypertensive hemorrhage is secondary to uncontrolled hypertension (HTN), which is a common cause of intracerebral hemorrhages. […] Lobar hemorrhage can be secondary to amyloid angiopathy, which is the most common cause seen in older patients (50 years of age).

• #4 Cerebral Palsy from Intracranial Hemorrhages (Brain Bleeds) | Michigan Cerebral Palsy Attorneys

  https://www.michigancerebralpalsyattorneys.com/causes-and-risk-factors-of-cerebral-palsy/birth-trauma/cerebral-palsy-from-intracranial-hemorrhages-brain-bleeds/

  Macrosomic babies (babies that are large for their gestational age) risk intracranial bleeding because their heads are too big to easily pass through the pelvis. […] A C-section is required in most cases to minimize the risk of intracranial hemorrhages. […] Abnormal presentation of the baby, like breech presentation, often leads to the kinds of difficult and traumatic deliveries that result in intracranial hemorrhaging. […] Prolonged labor causes head traumas resulting in intracranial hemorrhaging. […] Hypoxic ischemic encephalopathy (HIE) – HIE reduces oxygen supply in the brain, and the resultant cell death and blood vessel breakdown leads to bleeding within the brain. […] Blood disorders such as vitamin K deficiency and hemophilia commonly cause spontaneous intracranial hemorrhaging.

• #4 What Are the Chances of Surviving Bleeding in the Brain?

  https://www.medicinenet.com/chances_of_surviving_bleeding_in_the_brain/article.htm

  Brain hemorrhage predominantly results from the irritation of brain tissues, leading to swelling or cerebral palsy. […] Swelling increases pressure on the arteries, causing them to burst and create hematomas. This blocks blood flow and deprives oxygen to the affected parts of the brain, eventually damaging and killing brain cells. Hematomas occur when blood collects and turns into a mass that can result in excess pressure and/or swelling in the brain. […] The causes of brain hemorrhage may include but are not limited to: Long-term hypertension (high blood pressure), Trauma or injury (a blow to the head, a fall, or an accident), Atherosclerosis (hardening, thickening, and narrowing of the arteries due to accumulation of fatty deposits), Aneurysms (an abnormal bulge that weaken the walls of blood vessels), Blood clots, Malformations in the brain arteries and blood vessels, Amyloid angiopathy (deposition of amyloid on the walls of the arteries in the brain related to high blood pressure and aging), Bleeding disorders (sickle cell anemia and hemophilia), Brain tumors, Liver diseases, Smoking, Heavy alcohol use, Use of illegal drugs (cocaine), Conditions related to pregnancy or childbirth (eclampsia, postpartum vasculopathy, and neonatal intraventricular hemorrhage).

• #5 Intracranial Hemorrhage – StatPearls – NCBI Bookshelf

  https://www.ncbi.nlm.nih.gov/books/NBK470242/

  Intracranial hemorrhage comprises 4 broad types of hemorrhage, including epidural hemorrhage, subdural hemorrhage, subarachnoid hemorrhage, and intraparenchymal hemorrhage. Each type of hemorrhage arises from distinct etiologies, leading to variable clinical findings, prognosis, and outcomes. […] An epidural hematoma is arterial or venous in origin. The classical arterial epidural hematoma occurs after blunt trauma to the head, typically the temporal region. This type of bleeding may also occur after a penetrating head injury. Typically, a skull fracture with damage to the middle meningeal artery causes arterial bleeding into the potential epidural space. […] A venous epidural hematoma occurs after a skull fracture, and the venous bleeding from the skull fracture fills the epidural space.

• #5

  https://www.nhs.uk/conditions/subdural-haematoma/causes/

  Subdural haematomas are usually caused by a head injury. […] Head injuries that cause subdural haematomas are often severe, such as from a car crash, fall or violent assault. […] Minor bumps to the head can also lead to a subdural haematoma in a few cases. […] A subdural haematoma develops if there’s bleeding into the space between the skull and the brain (the subdural space) caused by damage to the blood vessels of the brain or the brain itself. […] Chronic subdural haematomas form gradually a few weeks after a minor head injury. […] These are more commonly seen in older people and those who take anticoagulant („blood-thinning”) medicine, drink excessively, or have another medical condition. […] Most chronic subdural haematomas affect people over 60, and the chances of developing one increase with age.

• #5 Intracranial Hemorrhage – StatPearls – NCBI Bookshelf

  https://www.ncbi.nlm.nih.gov/books/NBK470242/

  Subdural hemorrhage occurs when blood enters the subdural space, which is anatomically the arachnoid space. Commonly, subdural hemorrhage occurs after a vessel traversing between the brain and skull is stretched, broken, or torn and begins to bleed into the subdural space. […] A subarachnoid hemorrhage refers to bleeding into the subarachnoid space. Subarachnoid hemorrhage is divided into traumatic versus non-traumatic subarachnoid hemorrhage. A second categorization divides subarachnoid hemorrhage into an aneurysmal and non-aneurysmal subarachnoid hemorrhage. Aneurysmal subarachnoid hemorrhage occurs after the rupture of a cerebral aneurysm. […] Non-aneurysmal subarachnoid bleeding most commonly occurs after trauma with a blunt head injury with or without penetrating trauma or sudden acceleration changes to the head. […] Intraparenchymal hemorrhage is bleeding into the brain parenchyma. A wide variety of reasons cause hemorrhage, including, but not limited to, hypertension, arteriovenous malformation (AVM), amyloid angiopathy, aneurysm rupture, tumor, coagulopathy, infection, vasculitis, and trauma.

• #5 Intracerebral Hemorrhage – StatPearls – NCBI Bookshelf

  https://www.ncbi.nlm.nih.gov/books/NBK553103/

  Over 60% of primary bleeds are related to hypertension, and these hematomas are most commonly seen in the posterior fossa, pons, basal ganglia, and thalamus. […] Lobar hemorrhages in older patients are often the distinguishing feature of amyloid angiopathy. […] In contrast, when an ICH is due to an underlying structural pathology, such as vascular anomalies or malignant tissue, they are categorized as secondary ICH. […] Vascular lesions include arteriovenous malformations, cavernous angiomas, cerebral aneurysms, and aorto-venous fistulae, and these are often the cause of ICH in the young, otherwise healthy, population. […] Cerebral hematomas may also be secondary to a primary or metastatic lesion or even the hemorrhagic conversion of a recent ischaemic infarct. […] Further, congenial and acquired bleeding diathesis is a common factor in ICHs, becoming more common due to the large population of adults on an anticoagulant (i.e., warfarin) and antiplatelet (aspirin) therapy.

• #5 Intracranial hemorrhage – Wikipedia

  https://en.wikipedia.org/wiki/Intracranial_hemorrhage

  Besides from head injury, it may occur spontaneously, usually from a ruptured cerebral aneurysm (focal outpouchings with weakened walls on the arteries on the brain surface that are prone to rupture). […] Cerebral ateriovenous malformation (Cerebral AVM) is characterised by abnormal shunting between cerebral arteries and veins without going through capillaries. Instead the blood goes through a collection of small vessels from arteries to veins. These collection of abnormal small vessels is termed as „nidus”. This condition happens in 0.1% of the population has a risk of 2 to 4% per year for intracranial bleeding.

• #5 The Radiology Assistant : Non-traumatic Intracranial Hemorrhage

  https://radiologyassistant.nl/neuroradiology/hemorrhage/non-traumatic-intracranial-hemorrhage

  Any type of bleeding inside the skull or brain is a medical emergency. The most common causes of hemorrhage are trauma, haemorrhagic stroke and subarachnoid haemorrhage due to a ruptured aneurysm. […] 85% of non-traumatic hemorrhages are seen in patients with hypertension or cerebral amyloid angiopathy (CAA). […] The most common cause especially in elderly is cerebral amyloid angiopathy, but also hypertension because of its high prevalence. […] Hemorrhage in the basal ganglia is typically seen in hypertension. […] The presence of an intraventricular haematoma is considered a poor prognostic factor due to the obstruction to CSF with hydrocephalus and raised intracranial pressure. […] Non-traumatic SAH is usually the result of aneurysmal rupture with spread of blood into the subarchnoidal cisterns.

• #5 Subdural Hematoma: What It Is, Causes, Symptoms & Treatment

  https://my.clevelandclinic.org/health/diseases/21183-subdural-hematoma

  Hemophilia: This is an inherited bleeding disorder that prevents your blood from clotting. People with hemophilia have a higher risk of uncontrolled bleeding after an injury. […] Alcohol use disorder: Drinking excessive amounts of alcohol causes liver damage over time. A damaged liver cant produce enough of the proteins that help your blood clot. This increases your risk of uncontrolled bleeding.

• #5 Etiology of tumor-related intracranial hemorrhage (Chapter 3) – Intracerebral Hemorrhage

  https://www.cambridge.org/core/books/intracerebral-hemorrhage/etiology-of-tumorrelated-intracranial-hemorrhage/C9E1489836DF96684EA605AEDCCF0F8E

  Cancer-related intracerebral bleeding is an uncommon cause of hemorrhage and represents only a fraction of all non-traumatic intracranial hemorrhages (ICHs). The mechanisms of intratumoral hemorrhage remain unclear, but include tumor necrosis, rupture of tumor blood vessels and invasion of parenchymal blood vessels by tumor. […] Metastatic brain tumors can cause intracerebral hemorrhage. Brain metastases from any primary tumor can cause bleeding, but the different primaries have a wide variability in their tendency to bleed. […] A tumor embolus may cause an aneurysm that can lead to potentially fatal intraparenchymal or subarachnoid hemorrhages. The clinical presentation of intratumoral hemorrhage is often indistinguishable from spontaneous ICH from more typical etiologies such as hypertension. […] The prognosis of a hemorrhagic neoplasm is primarily determined by the prognosis of the underlying malignancy.

• #5 Intracerebral hemorrhage | Radiology Reference Article | Radiopaedia.org

  https://radiopaedia.org/articles/intracerebral-hemorrhage-1?lang=us

  Intracerebral hemorrhages arise from rupture of a small blood vessel within the brain parenchyma or, less commonly, of a blood vessel adjacent to the parenchyma (e.g. jet hematoma). […] Non-traumatic intracerebral hemorrhages were historically etiologically divided according to whether or not they have an underlying structural lesion or bleeding diathesis. […] Spontaneous intracerebral hemorrhage presumed due to small vessel disease (formerly primary intracerebral hemorrhage) includes hypertensive microangiopathy and cerebral amyloid angiopathy. […] Secondary intracerebral hemorrhage: hemorrhage complicating some underlying structural lesion or bleeding diathesis includes hemorrhagic transformation of infarct (ischemic stroke), vascular malformation (e.g., brain arteriovenous malformation, cerebral cavernous malformation), tumor (e.g., metastases, glioblastoma), cerebral venous thrombosis, and bleeding diathesis (e.g., anticoagulation therapy). […] Etiologies more commonly seen in the pediatric or young adult demographic are discussed separately: see stroke in children and young adults.

• #5 Intracerebral Hemorrhage – AANS

  https://www.aans.org/patients/conditions-treatments/intracerebral-hemorrhage/

  Intracerebral hemorrhage (bleeding into the brain tissue) is the second most common cause of stroke (15-30% of strokes) and the most deadly. […] Blood vessels carry blood to and from the brain. Arteries or veins can rupture, either from abnormal pressure or abnormal development or trauma. […] Hypertension: chronic high blood pressure causes changes to the arteries of the brain which can make them much more likely to rupture. […] Age: more common after age of 55, with buildup of protein in walls of arteries called amyloid angiopathy. […] Gender: more common in men. […] Race: affects African Americans and Asians more than whites; likely related to higher prevalence of Hypertension in those races. […] Previous history of stroke: increases risk 23 times. […] Alcohol use and street drugs: cocaine, amphetamines increases risk. […] Liver disease: increases risk due to issues with blood clotting. […] Use of blood thinners. […] Primary brain causes: tumors, vascular anomalies, infection and venous sinus thrombosis.

• #5 Intracerebral Hemorrhage – StatPearls – NCBI Bookshelf

  https://www.ncbi.nlm.nih.gov/books/NBK553103/

  Studies have elicited certain tendencies in the population that suffer ICHs, thereby hypothesizing both modifiable and non-modifiable risk factors. […] The latter include non-white ethnicity, older age, familial apolipoprotein syndromes, and being male. […] The radiological finding of cerebral amyloid angiopathy also increases the risk of both lobar and recurrent ICH. […] Uncontrolled or untreated hypertension is a modifiable risk factor that increases the risk of ICH by two in the aging population. […] Other adjustable risk factors include abuse of drugs such and alcohol, nicotine, and cocaine.

• #5 Subdural Hematoma: What It Is, Causes, Symptoms & Treatment

  https://my.clevelandclinic.org/health/diseases/21183-subdural-hematoma

  Age: People 65 and older and babies are more at risk for getting subdural hematomas. As you age, your brain shrinks inside your skull. The space between your skull and brain widens. This makes the tiny veins in the membranes between your skull and brain stretch. These thinned, stretched veins are more likely to tear, even if you experience a minor head injury. Babies dont have strong neck muscles to protect themselves from head trauma. When someone shakes a baby forcefully, they can develop a subdural hematoma (shaken baby syndrome). […] Playing contact sports: People who play high-impact or extreme sports (like football, rugby or snowboarding) have an increased risk of a subdural hematoma. […] Taking blood thinners: Blood thinners (anticoagulants) slow down your clotting process or prevent blood from clotting at all. If your blood doesnt clot, bleeding around your brain can be severe and long-lasting, even after a relatively minor injury.

• #5 Intracranial Hematomas – Injuries and Poisoning – Merck Manual Consumer Version

  https://www.merckmanuals.com/home/injuries-and-poisoning/head-injuries/intracranial-hematomas

  Chronic subdural hematomas are more common among people with alcohol use disorder, older adults, and people who take medications that make blood less likely to clot (anticoagulants or antiplatelets). […] Intracerebral hematomas are common after a severe head injury. They can be caused by bruising of the brain (a cerebral contusion). […] Cerebral edema and its complications account for most deaths.

• #5 Epidural hematoma: MedlinePlus Medical EncyclopediaLock

  https://medlineplus.gov/ency/article/001412.htm

  An EDH is often caused by a skull fracture during childhood or adolescence. The membrane covering the brain is not as closely attached to the skull as it is in older people and children younger than 2 years. Therefore, this type of bleeding is more common in young people. […] An EDH can also occur due to rupture of a blood vessel, usually an artery. The blood vessel then bleeds into the space between the dura and the skull. […] The affected vessels are often torn by skull fractures. The fractures are most often the result of a severe head injury, such as those caused by motorcycle, bicycle, skateboard, snow boarding, or automobile accidents. Less severe blunt trauma, such as getting hit by a baseball, can also result in an EDH. […] Rapid bleeding causes a collection of blood (hematoma) that presses on the brain. The pressure inside the head (intracranial pressure, ICP) increases quickly. This pressure may result in more brain injury.

• #5 Intracerebral hemorrhage – Wikipedia

  https://en.wikipedia.org/wiki/Intracerebral_hemorrhage

  Intracerebral bleeds are the second most common cause of stroke, accounting for 10% of hospital admissions for stroke. High blood pressure raises the risks of spontaneous intracerebral hemorrhage by two to six times. More common in adults than in children, intraparenchymal bleeds are usually due to penetrating head trauma, but can also be due to depressed skull fractures. Acceleration-deceleration trauma, rupture of an aneurysm or arteriovenous malformation (AVM), and bleeding within a tumor are additional causes. Amyloid angiopathy is not an uncommon cause of intracerebral hemorrhage in patients over the age of 55. A very small proportion is due to cerebral venous sinus thrombosis. […] Hypertension is the strongest risk factor associated with intracerebral hemorrhage and long term control of elevated blood pressure has been shown to reduce the incidence of hemorrhage. Cerebral amyloid angiopathy, a disease characterized by deposition of amyloid beta peptides in the walls of the small blood vessels of the brain, leading to weakened blood vessel walls and an increased risk of bleeding; is also an important risk factor for the development of intracerebral hemorrhage. Other risk factors include advancing age (usually with a concomitant increase of cerebral amyloid angiopathy risk in the elderly), use of anticoagulants or antiplatelet medications, the presence of cerebral microbleeds, chronic kidney disease, and low low density lipoprotein (LDL) levels (usually below 70). The direct oral anticoagulants (DOACs) such as the factor Xa inhibitors or direct thrombin inhibitors are thought to have a lower risk of intracerebral hemorrhage as compared to the vitamin K antagonists such as warfarin. […] Traumatic intracerebral hematomas are divided into acute and delayed. Acute intracerebral hematomas occur at the time of the injury while delayed intracerebral hematomas have been reported from as early as 6 hours post injury to as long as several weeks.

• #5 Cerebral Palsy from Intracranial Hemorrhages (Brain Bleeds) | Michigan Cerebral Palsy Attorneys

  https://www.michigancerebralpalsyattorneys.com/causes-and-risk-factors-of-cerebral-palsy/birth-trauma/cerebral-palsy-from-intracranial-hemorrhages-brain-bleeds/

  Macrosomic babies (babies that are large for their gestational age) risk intracranial bleeding because their heads are too big to easily pass through the pelvis. […] A C-section is required in most cases to minimize the risk of intracranial hemorrhages. […] Abnormal presentation of the baby, like breech presentation, often leads to the kinds of difficult and traumatic deliveries that result in intracranial hemorrhaging. […] Prolonged labor causes head traumas resulting in intracranial hemorrhaging. […] Hypoxic ischemic encephalopathy (HIE) – HIE reduces oxygen supply in the brain, and the resultant cell death and blood vessel breakdown leads to bleeding within the brain. […] Blood disorders such as vitamin K deficiency and hemophilia commonly cause spontaneous intracranial hemorrhaging.

• #5 Intracranial hemorrhage – Wikipedia

  https://en.wikipedia.org/wiki/Intracranial_hemorrhage

  Additional risk factors that increase the likelihood of intracranial hemorrhage include smoking, heavy alcohol consumption, advanced age, a family history of stroke, diabetes, hyperlipidemia, obesity, and sedentary lifestyle. Hypertension remains the most prevalent and well-established risk factor, contributing to over 60% of primary bleeds. […] Intracranial bleed in hypertensive subjects usually occurs at 50 to 60 years of life with 30 to 50% chance of death. Such hemorrhages are typically located in the basal ganglia, cerebellum, or occipital lobes. […] Cerebral amyloid angiopathy (CAA) is the deposition of Amyloid beta peptide protein within the brain. Accumulation of such peptide proteins within the walls of the arteries can cause weakening of the walls and causes microhemorrhages, SAH within the cerebral sulci or large cerebral intraparenchymal bleed.

• #6 Epidural hematoma: MedlinePlus Medical EncyclopediaLock

  https://medlineplus.gov/ency/article/001412.htm

  An EDH is often caused by a skull fracture during childhood or adolescence. The membrane covering the brain is not as closely attached to the skull as it is in older people and children younger than 2 years. Therefore, this type of bleeding is more common in young people. […] An EDH can also occur due to rupture of a blood vessel, usually an artery. The blood vessel then bleeds into the space between the dura and the skull. […] The affected vessels are often torn by skull fractures. The fractures are most often the result of a severe head injury, such as those caused by motorcycle, bicycle, skateboard, snow boarding, or automobile accidents. Less severe blunt trauma, such as getting hit by a baseball, can also result in an EDH. […] Rapid bleeding causes a collection of blood (hematoma) that presses on the brain. The pressure inside the head (intracranial pressure, ICP) increases quickly. This pressure may result in more brain injury.

• #6 Subdural Hematoma: What It Is, Causes, Symptoms & Treatment

  https://my.clevelandclinic.org/health/diseases/21183-subdural-hematoma

  Age: People 65 and older and babies are more at risk for getting subdural hematomas. As you age, your brain shrinks inside your skull. The space between your skull and brain widens. This makes the tiny veins in the membranes between your skull and brain stretch. These thinned, stretched veins are more likely to tear, even if you experience a minor head injury. Babies dont have strong neck muscles to protect themselves from head trauma. When someone shakes a baby forcefully, they can develop a subdural hematoma (shaken baby syndrome). […] Playing contact sports: People who play high-impact or extreme sports (like football, rugby or snowboarding) have an increased risk of a subdural hematoma. […] Taking blood thinners: Blood thinners (anticoagulants) slow down your clotting process or prevent blood from clotting at all. If your blood doesnt clot, bleeding around your brain can be severe and long-lasting, even after a relatively minor injury.

• #6 Subdural Hematoma: What It Is, Causes, Symptoms & Treatment

  https://my.clevelandclinic.org/health/diseases/21183-subdural-hematoma

  A subdural hematoma is a type of bleeding inside your head. It happens when blood collects under the dura mater, one of the layers of tissue that protect your brain. It most often happens from a head injury and can be fatal. […] A subdural hematoma develops from a tear in a blood vessel. Blood leaks out of the torn vessel into the space between your dura mater and your arachnoid mater. Active bleeding into this space is called a subdural hemorrhage. A buildup of blood is a subdural hematoma. […] What causes subdural hematomas? Head injuries cause most subdural hematomas. Examples of how this could happen include: Falling and hitting your head. Taking a blow to your head in a car or bike accident. Hitting your head while playing sports. Getting a head injury from an assault or physical abuse.

• #6 Intracranial Hemorrhage: Background, Pathophysiology, Epidemiology

  https://emedicine.medscape.com/article/1163977-overview

  Predilection sites for intracerebral hemorrhage include the basal ganglia (40-50%), lobar regions (20-50%), thalamus (10-15%), pons (5-12%), cerebellum (5-10%), and other brainstem sites (1-5%). […] Intraventricular hemorrhage occurs in one third of intracerebral hemorrhage cases from extension of thalamic ganglionic bleeding into the ventricular space. Isolated intraventricular hemorrhage frequently arise from subependymal structures including the germinal matrix, AVMs, and cavernous angiomas.

• #6 Intracerebral Hemorrhage (Brain bleeds) Causes, Symptoms and Treatment | MedPark Hospital

  https://www.medparkhospital.com/en-US/disease-and-treatment/intracerebral-hemorrhage

  Cerebral aneurysms are due to localized weakening and ballooning of the walls of some blood vessels, which can rupture, resulting in blood pooling in the brain and brain swelling. […] Cerebral amyloid angiopathy. There is a buildup and precipitation of amyloid protein in the brain’s artery walls, commonly found in the elderly and often associated with age-related degeneration of brain blood vessels and high blood pressure. […] Cerebral arteriovenous malformation (AVM) is a rare, complex malformation of abnormal blood vessels connecting arteries and veins in the brain. A tear in an AVM can cause brain bleeding. […] Bleeding disorders. Hemophilia, thrombocytopenia, or taking anticoagulant medications in heart disease patients are risk factors for bleeding. […] Brain tumor. A large tumor pressing on the brain’s tissues can cause bleeding.

• #6 Intracerebral Hemorrhage – StatPearls – NCBI Bookshelf

  https://www.ncbi.nlm.nih.gov/books/NBK553103/

  Non-traumatic Intracerebral hemorrhage can be divided into primary and secondary, where primary bleeds account for 85% of all ICH and are related to chronic hypertension or amyloid angiopathy. […] Secondary hemorrhage is considered to be related but not limited to bleeding diathesis (iatrogenic, congenital, acquired), vascular malformations, neoplasms, hemorrhagic conversion of an ischaemic stroke, and drug abuse. […] Primary or spontaneous ICH accounts for over 85% of hemorrhagic strokes. […] A primary ICH diagnosis is often one of exclusion where no other pathological or structural cause is found and is supported by a history of chronic hypertension, increased age, and location of the clot. […] In patients with chronic arterial hypertension, it is thought that lipohyalinosis and degenerative changes of penetrating arterioles result in Charcot-Bouchard aneurysms in the small arterial vessels supplying deep cerebral structures.

• #6 Brain Hemorrhage: Symptoms & Causes | NewYork-Presbyterian

  https://www.nyp.org/neuro/brain-hemorrhage

  Blood or bleeding disorders – People who have diseases such as hemophilia and sickle cell anemia are more likely to experience brain bleeds. Their conditions contribute to lower levels of blood platelets and clotting. Additionally, patients on blood thinners have an increased risk of brain bleeds […] Liver disease – People with liver conditions have an increased risk of bleeding issues […] Brain tumors – Those who have had brain tumors are at a higher risk of developing a brain hemorrhage.

• #6 Etiology of tumor-related intracranial hemorrhage (Chapter 3) – Intracerebral Hemorrhage

  https://www.cambridge.org/core/books/intracerebral-hemorrhage/etiology-of-tumorrelated-intracranial-hemorrhage/C9E1489836DF96684EA605AEDCCF0F8E

  Cancer-related intracerebral bleeding is an uncommon cause of hemorrhage and represents only a fraction of all non-traumatic intracranial hemorrhages (ICHs). The mechanisms of intratumoral hemorrhage remain unclear, but include tumor necrosis, rupture of tumor blood vessels and invasion of parenchymal blood vessels by tumor. […] Metastatic brain tumors can cause intracerebral hemorrhage. Brain metastases from any primary tumor can cause bleeding, but the different primaries have a wide variability in their tendency to bleed. […] A tumor embolus may cause an aneurysm that can lead to potentially fatal intraparenchymal or subarachnoid hemorrhages. The clinical presentation of intratumoral hemorrhage is often indistinguishable from spontaneous ICH from more typical etiologies such as hypertension. […] The prognosis of a hemorrhagic neoplasm is primarily determined by the prognosis of the underlying malignancy.

• #6 Brain Bleeds: Symptoms, Causes, Diagnosis, and Treatment

  https://www.verywellhealth.com/a-subdural-hematoma-is-bleed-into-the-brain-1720023

  Hemorrhagic conversion: An ischemic stroke is a type of stroke caused by the obstruction of a blood vessel in the brain. The ensuing pressure can sometimes cause the vessel to burst, causing bleeding referred to as hemorrhagic conversion. […] Brain tumor: Cancerous and non-cancerous tumors can cause bleeding by placing pressure on adjacent blood vessels as they grow, gradually weakening them and causing them to burst. […] Arteriovenous malformation: These are defects in the connection between arteries and veins that cause them to weaken, leak, and sometimes burst. […] Cerebral amyloid angiopathy: This is the build-up of proteins within the walls of arteries in the brain that can cause them to weaken, leak, and rupture.

• #6 Intracerebral Hemorrhage – AANS

  https://www.aans.org/patients/conditions-treatments/intracerebral-hemorrhage/

  Intracerebral hemorrhage (bleeding into the brain tissue) is the second most common cause of stroke (15-30% of strokes) and the most deadly. […] Blood vessels carry blood to and from the brain. Arteries or veins can rupture, either from abnormal pressure or abnormal development or trauma. […] Hypertension: chronic high blood pressure causes changes to the arteries of the brain which can make them much more likely to rupture. […] Age: more common after age of 55, with buildup of protein in walls of arteries called amyloid angiopathy. […] Gender: more common in men. […] Race: affects African Americans and Asians more than whites; likely related to higher prevalence of Hypertension in those races. […] Previous history of stroke: increases risk 23 times. […] Alcohol use and street drugs: cocaine, amphetamines increases risk. […] Liver disease: increases risk due to issues with blood clotting. […] Use of blood thinners. […] Primary brain causes: tumors, vascular anomalies, infection and venous sinus thrombosis.

• #6 Infant Intracranial Hemorrhages (Brain Bleeds): Signs, Symptoms, Causes | ABC Law Centers: Birth Injury Lawyers

  https://www.abclawcenters.com/practice-areas/infant-intracranial-hemorrhages/

  Infant intracranial hemorrhages (otherwise known as brain bleeds) are birth injuries that range from minor to extremely severe. They can be caused by birth asphyxia (oxygen deprivation during or around the time of birth) or birth trauma (injuries caused by excessive mechanical force to the baby’s head). […] Intraventricular hemorrhage (IVH) is a serious type of intracranial hemorrhage that occurs when there is bleeding in the brain’s ventricular system, where cerebrospinal fluid is produced. It is usually seen in premature infants and infants with low birth weight, because the blood vessels in their brains are not fully developed, and are therefore weaker than that of babies born at term. Oxygen deprivation and birth trauma can also contribute to intraventricular hemorrhage. […] Common risk factors for and causes of intracranial hemorrhages in babies include: Macrosomia: a pregnancy condition in which the fetus is larger than average for the gestational age, which can make vaginal birth dangerous.

• #6 Subdural Hematoma: Background, Pathophysiology, Etiology

  https://emedicine.medscape.com/article/1137207-overview

  Causes of chronic SDH include head trauma, acute subdural hematoma, and spontaneous or idiopathic causes. […] Risk factors for chronic SDH include chronic alcoholism, epilepsy, coagulopathy, arachnoid cysts, anticoagulant therapy, cardiovascular disease, thrombocytopenia, and diabetes mellitus. […] In younger patients, alcoholism, thrombocytopenia, coagulation disorders, and oral anticoagulant therapy have been found to be more prevalent. Arachnoid cysts are more commonly associated with chronic SDH in patients younger than 40 years. […] In older patients, cardiovascular disease and arterial hypertension are found to be more prevalent.

• #6 Intracranial Hemorrhage – StatPearls – NCBI Bookshelf

  https://www.ncbi.nlm.nih.gov/books/NBK470242/

  Intracranial hemorrhage comprises 4 broad types of hemorrhage, including epidural hemorrhage, subdural hemorrhage, subarachnoid hemorrhage, and intraparenchymal hemorrhage. Each type of hemorrhage arises from distinct etiologies, leading to variable clinical findings, prognosis, and outcomes. […] An epidural hematoma is arterial or venous in origin. The classical arterial epidural hematoma occurs after blunt trauma to the head, typically the temporal region. This type of bleeding may also occur after a penetrating head injury. Typically, a skull fracture with damage to the middle meningeal artery causes arterial bleeding into the potential epidural space. […] A venous epidural hematoma occurs after a skull fracture, and the venous bleeding from the skull fracture fills the epidural space.

• #6 The Radiology Assistant : Non-traumatic Intracranial Hemorrhage

  https://radiologyassistant.nl/neuroradiology/hemorrhage/non-traumatic-intracranial-hemorrhage

  Any type of bleeding inside the skull or brain is a medical emergency. The most common causes of hemorrhage are trauma, haemorrhagic stroke and subarachnoid haemorrhage due to a ruptured aneurysm. […] 85% of non-traumatic hemorrhages are seen in patients with hypertension or cerebral amyloid angiopathy (CAA). […] The most common cause especially in elderly is cerebral amyloid angiopathy, but also hypertension because of its high prevalence. […] Hemorrhage in the basal ganglia is typically seen in hypertension. […] The presence of an intraventricular haematoma is considered a poor prognostic factor due to the obstruction to CSF with hydrocephalus and raised intracranial pressure. […] Non-traumatic SAH is usually the result of aneurysmal rupture with spread of blood into the subarchnoidal cisterns.

• #6 Hematoma: Causes, Types, Symptoms, Treatments, and More

  https://resources.healthgrades.com/right-care/symptoms-and-conditions/hematoma

  Subarachnoid hemorrhage: This occurs on the pia mater meningeal layer that covers the surface of the brain beneath the arachnoid layer of the meninges. Subarachnoid hemorrhage most commonly occurs after trauma to the cortical surface vessels. […] Intracerebral or intraparenchymal hemorrhage: This is a blood pocket in the brain tissue itself. It most commonly occurs as a result of high blood pressure causing damage to cerebral blood vessels.

• #6 Subdural hematoma Information | Mount Sinai – New York

  https://www.mountsinai.org/health-library/diseases-conditions/subdural-hematoma

  Some subdural hematomas occur without cause (spontaneously). […] The following increase the risk for a subdural hematoma: Medicines that thin the blood (such as warfarin or aspirin), Long-term alcohol use, Medical conditions that make your blood clot poorly, Repeated head injury, such as from falls, Very young or very old age. […] In infants and young children, a subdural hematoma may occur after child abuse and are commonly seen in a condition called shaken baby syndrome.

• #6 Intracranial hemorrhage – Wikipedia

  https://en.wikipedia.org/wiki/Intracranial_hemorrhage

  Intracranial hemorrhage (ICH) may be classified as either traumatic or non-traumatic (spontaneous). Traumatic causes include head trauma resulting from falls, vehicular accidents, or physical assault. Non-traumatic causes are more varied and often related to underlying conditions. Chronic hypertension is the most common non-traumatic cause, particularly in deep brain structures such as the basal ganglia, thalamus, pons, and posterior fossa. Other spontaneous causes include cerebral amyloid angiopathy, especially among the elderly, as well as bleeding disorders such as hemophilia and thrombocytopenia, vascular malformations like arteriovenous malformation (AVMs), and brain tumors. […] The use of anticoagulant or antiplatelet medications, such as warfarin and aspirin, has been associated with increased hematoma volume and expansion.

• #6 Cerebral Palsy from Intracranial Hemorrhages (Brain Bleeds) | Michigan Cerebral Palsy Attorneys

  https://www.michigancerebralpalsyattorneys.com/causes-and-risk-factors-of-cerebral-palsy/birth-trauma/cerebral-palsy-from-intracranial-hemorrhages-brain-bleeds/

  Due to their fragility and underdeveloped blood vessels, approximately 20% of premature infants under 3.3 pounds suffer from intracranial hemorrhages. […] Improper delivery techniques: Misuse of vacuum extractors or forceps, twisting of the head and neck or prolonged pulling during delivery, and use of the vacuum extractor three or more times without resorting to C-section can lead to brain bleeding.

• #6

  https://consensus.app/questions/causes-of-brain-bleed/

  Subarachnoid hemorrhage (SAH), often caused by a ruptured intracranial aneurysm, accounts for 30% of all hemorrhagic strokes. […] The bleeding occurs in the subarachnoid space and can lead to secondary brain injury through inflammatory responses and programmed cell death. […] These inflammatory events contribute to the overall damage and are a critical area of study for developing targeted treatments to mitigate secondary brain injury following SAH. […] Spontaneous intracerebral hemorrhage (ICH) is a nontraumatic bleed into the brain parenchyma, often resulting from chronic hypertension or cerebral amyloid angiopathy. […] This type of hemorrhage accounts for 10-15% of all strokes and has a high mortality rate. […] Secondary causes of ICH include vascular abnormalities, tumors, and coagulopathies. […] Chronic hypertension remains the most common cause, but anticoagulant use is an increasing risk factor.

• #6

  https://consensus.app/questions/causes-of-brain-bleed/

  Traumatic brain injury (TBI) is a significant cause of intracerebral hemorrhage and is often associated with coagulopathy. […] This condition involves a transition from a hypercoagulable to a hypocoagulable state, leading to persistent bleeding and poor clinical outcomes. […] The brain’s unique procoagulant environment, enriched with key procoagulant molecules, contributes to this coagulopathy. […] Blood-brain barrier (BBB) dysfunction is a critical factor in the progression of intracerebral hemorrhage. […] After the initial bleed, continued bleeding and hematoma expansion can occur, exacerbating brain injury. […] Blood components and the inflammatory response to these components play significant roles in BBB dysfunction. […] Brain bleeds can result from various causes, including trauma, chronic hypertension, neurodegenerative diseases, and coagulopathies. […] Understanding the underlying mechanisms and risk factors is essential for developing effective treatments and improving patient outcomes.

• #7 Intracranial hematoma – Symptoms and causes – Mayo Clinic

  https://www.mayoclinic.org/diseases-conditions/intracranial-hematoma/symptoms-causes/syc-20356145

  An intracerebral hematoma occurs when blood pools in the tissues of the brain. […] There are many causes, including: A head injury, which can result in multiple intracerebral hematomas. […] Some conditions also may increase the risk of having an intracerebral hematoma. They include being born with poorly connected arteries and veins, and having a bulging blood vessel in the brain, known as an aneurysm. High blood pressure, tumors and some diseases also increase the risk.

• #7

  https://www.nhs.uk/conditions/subdural-haematoma/causes/

  Subdural haematomas are usually caused by a head injury. […] Head injuries that cause subdural haematomas are often severe, such as from a car crash, fall or violent assault. […] Minor bumps to the head can also lead to a subdural haematoma in a few cases. […] A subdural haematoma develops if there’s bleeding into the space between the skull and the brain (the subdural space) caused by damage to the blood vessels of the brain or the brain itself. […] Chronic subdural haematomas form gradually a few weeks after a minor head injury. […] These are more commonly seen in older people and those who take anticoagulant („blood-thinning”) medicine, drink excessively, or have another medical condition. […] Most chronic subdural haematomas affect people over 60, and the chances of developing one increase with age.

• #7 Intracranial Hemorrhage – StatPearls – NCBI Bookshelf

  https://www.ncbi.nlm.nih.gov/books/NBK470242/

  Subdural hemorrhage occurs when blood enters the subdural space, which is anatomically the arachnoid space. Commonly, subdural hemorrhage occurs after a vessel traversing between the brain and skull is stretched, broken, or torn and begins to bleed into the subdural space. […] A subarachnoid hemorrhage refers to bleeding into the subarachnoid space. Subarachnoid hemorrhage is divided into traumatic versus non-traumatic subarachnoid hemorrhage. A second categorization divides subarachnoid hemorrhage into an aneurysmal and non-aneurysmal subarachnoid hemorrhage. Aneurysmal subarachnoid hemorrhage occurs after the rupture of a cerebral aneurysm. […] Non-aneurysmal subarachnoid bleeding most commonly occurs after trauma with a blunt head injury with or without penetrating trauma or sudden acceleration changes to the head. […] Intraparenchymal hemorrhage is bleeding into the brain parenchyma. A wide variety of reasons cause hemorrhage, including, but not limited to, hypertension, arteriovenous malformation (AVM), amyloid angiopathy, aneurysm rupture, tumor, coagulopathy, infection, vasculitis, and trauma.

• #7 Intracerebral hemorrhage – Wikipedia

  https://en.wikipedia.org/wiki/Intracerebral_hemorrhage

  Intracerebral bleeds are the second most common cause of stroke, accounting for 10% of hospital admissions for stroke. High blood pressure raises the risks of spontaneous intracerebral hemorrhage by two to six times. More common in adults than in children, intraparenchymal bleeds are usually due to penetrating head trauma, but can also be due to depressed skull fractures. Acceleration-deceleration trauma, rupture of an aneurysm or arteriovenous malformation (AVM), and bleeding within a tumor are additional causes. Amyloid angiopathy is not an uncommon cause of intracerebral hemorrhage in patients over the age of 55. A very small proportion is due to cerebral venous sinus thrombosis. […] Hypertension is the strongest risk factor associated with intracerebral hemorrhage and long term control of elevated blood pressure has been shown to reduce the incidence of hemorrhage. Cerebral amyloid angiopathy, a disease characterized by deposition of amyloid beta peptides in the walls of the small blood vessels of the brain, leading to weakened blood vessel walls and an increased risk of bleeding; is also an important risk factor for the development of intracerebral hemorrhage. Other risk factors include advancing age (usually with a concomitant increase of cerebral amyloid angiopathy risk in the elderly), use of anticoagulants or antiplatelet medications, the presence of cerebral microbleeds, chronic kidney disease, and low low density lipoprotein (LDL) levels (usually below 70). The direct oral anticoagulants (DOACs) such as the factor Xa inhibitors or direct thrombin inhibitors are thought to have a lower risk of intracerebral hemorrhage as compared to the vitamin K antagonists such as warfarin. […] Traumatic intracerebral hematomas are divided into acute and delayed. Acute intracerebral hematomas occur at the time of the injury while delayed intracerebral hematomas have been reported from as early as 6 hours post injury to as long as several weeks.

• #7 Intracerebral hemorrhage | Radiology Reference Article | Radiopaedia.org

  https://radiopaedia.org/articles/intracerebral-hemorrhage-1?lang=us

  Intracerebral hemorrhages arise from rupture of a small blood vessel within the brain parenchyma or, less commonly, of a blood vessel adjacent to the parenchyma (e.g. jet hematoma). […] Non-traumatic intracerebral hemorrhages were historically etiologically divided according to whether or not they have an underlying structural lesion or bleeding diathesis. […] Spontaneous intracerebral hemorrhage presumed due to small vessel disease (formerly primary intracerebral hemorrhage) includes hypertensive microangiopathy and cerebral amyloid angiopathy. […] Secondary intracerebral hemorrhage: hemorrhage complicating some underlying structural lesion or bleeding diathesis includes hemorrhagic transformation of infarct (ischemic stroke), vascular malformation (e.g., brain arteriovenous malformation, cerebral cavernous malformation), tumor (e.g., metastases, glioblastoma), cerebral venous thrombosis, and bleeding diathesis (e.g., anticoagulation therapy). […] Etiologies more commonly seen in the pediatric or young adult demographic are discussed separately: see stroke in children and young adults.

• #7 Brain Hemorrhage (Bleeding): Causes, Symptoms, Treatments

  https://www.webmd.com/brain/brain-hemorrhage-bleeding-causes-symptoms-treatments

  Blood or bleeding disorders. Hemophilia and sickle cell anemia can both cause decreased levels of platelets, blood cells that stop bleeding by forming clots. […] Liver disease. This condition is linked to increased bleeding in general. […] Brain tumors. More studies need to be done to understand which types of tumors are likely to bleed.

• #7 Etiology of tumor-related intracranial hemorrhage (Chapter 3) – Intracerebral Hemorrhage

  https://www.cambridge.org/core/books/intracerebral-hemorrhage/etiology-of-tumorrelated-intracranial-hemorrhage/C9E1489836DF96684EA605AEDCCF0F8E

  Cancer-related intracerebral bleeding is an uncommon cause of hemorrhage and represents only a fraction of all non-traumatic intracranial hemorrhages (ICHs). The mechanisms of intratumoral hemorrhage remain unclear, but include tumor necrosis, rupture of tumor blood vessels and invasion of parenchymal blood vessels by tumor. […] Metastatic brain tumors can cause intracerebral hemorrhage. Brain metastases from any primary tumor can cause bleeding, but the different primaries have a wide variability in their tendency to bleed. […] A tumor embolus may cause an aneurysm that can lead to potentially fatal intraparenchymal or subarachnoid hemorrhages. The clinical presentation of intratumoral hemorrhage is often indistinguishable from spontaneous ICH from more typical etiologies such as hypertension. […] The prognosis of a hemorrhagic neoplasm is primarily determined by the prognosis of the underlying malignancy.

• #7 Intracerebral Hemorrhage – StatPearls – NCBI Bookshelf

  https://www.ncbi.nlm.nih.gov/books/NBK553103/

  Studies have elicited certain tendencies in the population that suffer ICHs, thereby hypothesizing both modifiable and non-modifiable risk factors. […] The latter include non-white ethnicity, older age, familial apolipoprotein syndromes, and being male. […] The radiological finding of cerebral amyloid angiopathy also increases the risk of both lobar and recurrent ICH. […] Uncontrolled or untreated hypertension is a modifiable risk factor that increases the risk of ICH by two in the aging population. […] Other adjustable risk factors include abuse of drugs such and alcohol, nicotine, and cocaine.

• #7 Infant Intracranial Hemorrhages (Brain Bleeds): Signs, Symptoms, Causes | ABC Law Centers: Birth Injury Lawyers

  https://www.abclawcenters.com/practice-areas/infant-intracranial-hemorrhages/

  Hypoxic-ischemic encephalopathy (HIE): a dangerous neonatal brain injury resulting from decreased oxygen and blood flow to the baby at or near the time of delivery. The lack of blood flow results in cell death and causes the blood vessel walls to break down, which leads to bleeding. […] Improper use of delivery instruments such as forceps or vacuum extractors is well-documented as a cause of intracranial bleeding. […] Additionally, premature babies are at a much higher risk for intracranial hemorrhages due to the fragility of their underdeveloped blood vessels.

• #7

  https://www.nhs.uk/conditions/subdural-haematoma/causes/

  This is thought to be because most people’s brains shrink to some degree as they get older. […] Drinking too much alcohol over a long period of time can also gradually cause the brain to shrink and make the brain’s blood vessels more vulnerable to damage. […] Taking medicine to reduce your risk of blood clots can increase your risk of developing a chronic subdural haematoma. […] This is because it means your blood clots less easily and any bleeding caused by a head injury is likely to be more severe. […] An increased risk of chronic subdural haematoma has also been linked with: epilepsy a condition that causes repeated fits (seizures), haemophilia a condition that stops your blood clotting properly, having a ventriculoperitoneal shunt a thin tube implanted in the brain to drain away any excess fluid to treat hydrocephalus, brain aneurysms a bulge in one of the brain’s blood vessels that can burst and cause bleeding on the brain, cancerous (malignant) brain tumours.

• #7 Intracranial Hemorrhage – StatPearls – NCBI Bookshelf

  https://www.ncbi.nlm.nih.gov/books/NBK470242/

  Intracranial hemorrhage comprises 4 broad types of hemorrhage, including epidural hemorrhage, subdural hemorrhage, subarachnoid hemorrhage, and intraparenchymal hemorrhage. Each type of hemorrhage arises from distinct etiologies, leading to variable clinical findings, prognosis, and outcomes. […] An epidural hematoma is arterial or venous in origin. The classical arterial epidural hematoma occurs after blunt trauma to the head, typically the temporal region. This type of bleeding may also occur after a penetrating head injury. Typically, a skull fracture with damage to the middle meningeal artery causes arterial bleeding into the potential epidural space. […] A venous epidural hematoma occurs after a skull fracture, and the venous bleeding from the skull fracture fills the epidural space.

• #7 Intracerebral Hemorrhage – StatPearls – NCBI Bookshelf

  https://www.ncbi.nlm.nih.gov/books/NBK553103/

  Over 60% of primary bleeds are related to hypertension, and these hematomas are most commonly seen in the posterior fossa, pons, basal ganglia, and thalamus. […] Lobar hemorrhages in older patients are often the distinguishing feature of amyloid angiopathy. […] In contrast, when an ICH is due to an underlying structural pathology, such as vascular anomalies or malignant tissue, they are categorized as secondary ICH. […] Vascular lesions include arteriovenous malformations, cavernous angiomas, cerebral aneurysms, and aorto-venous fistulae, and these are often the cause of ICH in the young, otherwise healthy, population. […] Cerebral hematomas may also be secondary to a primary or metastatic lesion or even the hemorrhagic conversion of a recent ischaemic infarct. […] Further, congenial and acquired bleeding diathesis is a common factor in ICHs, becoming more common due to the large population of adults on an anticoagulant (i.e., warfarin) and antiplatelet (aspirin) therapy.

• #7 Cerebral Palsy from Intracranial Hemorrhages (Brain Bleeds) | Michigan Cerebral Palsy Attorneys

  https://www.michigancerebralpalsyattorneys.com/causes-and-risk-factors-of-cerebral-palsy/birth-trauma/cerebral-palsy-from-intracranial-hemorrhages-brain-bleeds/

  Macrosomic babies (babies that are large for their gestational age) risk intracranial bleeding because their heads are too big to easily pass through the pelvis. […] A C-section is required in most cases to minimize the risk of intracranial hemorrhages. […] Abnormal presentation of the baby, like breech presentation, often leads to the kinds of difficult and traumatic deliveries that result in intracranial hemorrhaging. […] Prolonged labor causes head traumas resulting in intracranial hemorrhaging. […] Hypoxic ischemic encephalopathy (HIE) – HIE reduces oxygen supply in the brain, and the resultant cell death and blood vessel breakdown leads to bleeding within the brain. […] Blood disorders such as vitamin K deficiency and hemophilia commonly cause spontaneous intracranial hemorrhaging.

• #7 Intracerebral hemorrhage (ICH) – EMCrit Project

  https://emcrit.org/ibcc/ich/

  Intracerebral hemorrhage (ICH) refers to a primary or secondary non-traumatic hemorrhage. […] Causes ~80% of all intracranial hemorrhage. […] Risk factors include age, hypertension, and diabetes. […] Macrovascular etiologies often require surgical resection and/or embolization by interventional radiology to avoid re-bleeding. Vascular malformations are the most common cause of ICH in young adults. […] Cerebral venous thrombosis with secondary hemorrhage. […] ~90% are idiopathic. […] ~10% have an underlying etiology, including: Hypertension, Arteriovenous malformation (AVM), arteriovenous fistula, or aneurysm, Moyamoya disease, Coagulopathy, Choroid plexus tumor or ependymal lesion. […] Cerebral amyloid angiopathy has a prevalence of ~5% among people 65YO, accounting for ~15% of all spontaneous intracranial hemorrhages. […] Intracranial hemorrhage is often provoked by anticoagulation or thrombolysis.

• #7

  https://consensus.app/questions/causes-of-brain-bleed/

  Traumatic brain injury (TBI) is a significant cause of intracerebral hemorrhage and is often associated with coagulopathy. […] This condition involves a transition from a hypercoagulable to a hypocoagulable state, leading to persistent bleeding and poor clinical outcomes. […] The brain’s unique procoagulant environment, enriched with key procoagulant molecules, contributes to this coagulopathy. […] Blood-brain barrier (BBB) dysfunction is a critical factor in the progression of intracerebral hemorrhage. […] After the initial bleed, continued bleeding and hematoma expansion can occur, exacerbating brain injury. […] Blood components and the inflammatory response to these components play significant roles in BBB dysfunction. […] Brain bleeds can result from various causes, including trauma, chronic hypertension, neurodegenerative diseases, and coagulopathies. […] Understanding the underlying mechanisms and risk factors is essential for developing effective treatments and improving patient outcomes.

• #7 Brain Hemorrhage: Symptoms & Causes | NewYork-Presbyterian

  https://www.nyp.org/neuro/brain-hemorrhage

  What causes a brain hemorrhage? […] The most common causes of a brain hemorrhage are: […] Head trauma – Injuries to the head are the most common reason for a brain hemorrhage to occur in people younger than 50 years old […] High blood pressure – High blood pressure, if left untreated, can weaken the blood vessel walls and lead to a brain hemorrhage […] Aneurysm – An aneurysm occurs when a blood vessel wall weakens and swells. A burst aneurysm can cause bleeding in the brain and lead to stroke […] Blood vessel abnormalities – An arteriovenous malformation (AVM) causes blood vessels in and around the brain to become weak. It may be present at birth but is only discoverable when symptoms appear […] Amyloid angiopathy – This blood irregularity usually occurs among older adults with high blood pressure. It may produce small bleeds that go unnoticed until finally causing a larger bleed

• #8 Intracranial Hemorrhage: Background, Pathophysiology, Epidemiology

  https://emedicine.medscape.com/article/1163977-overview

  Intracerebral hemorrhage most commonly results from hypertensive damage to blood vessel walls (eg, hypertension, eclampsia, drug abuse), but it also may be due to autoregulatory dysfunction with excessive cerebral blood flow (eg, reperfusion injury, hemorrhagic transformation, cold exposure), rupture of an aneurysm or arteriovenous malformation (AVM), arteriopathy (eg, cerebral amyloid angiopathy, moyamoya), altered hemostasis (eg, thrombolysis, anticoagulation, bleeding diathesis), hemorrhagic necrosis (eg, tumor, infection), or venous outflow obstruction (eg, cerebral venous thrombosis). […] Nonpenetrating and penetrating cranial trauma are also common causes of intracerebral hemorrhage. […] Chronic hypertension produces a small vessel vasculopathy characterized by lipohyalinosis, fibrinoid necrosis, and development of Charcot-Bouchard aneurysms, affecting penetrating arteries throughout the brain including lenticulostriates, thalamoperforators, paramedian branches of the basilar artery, superior cerebellar arteries, and anterior inferior cerebellar arteries.

• #8 Intracerebral hemorrhage – Wikipedia

  https://en.wikipedia.org/wiki/Intracerebral_hemorrhage

  Intracerebral bleeds are the second most common cause of stroke, accounting for 10% of hospital admissions for stroke. High blood pressure raises the risks of spontaneous intracerebral hemorrhage by two to six times. More common in adults than in children, intraparenchymal bleeds are usually due to penetrating head trauma, but can also be due to depressed skull fractures. Acceleration-deceleration trauma, rupture of an aneurysm or arteriovenous malformation (AVM), and bleeding within a tumor are additional causes. Amyloid angiopathy is not an uncommon cause of intracerebral hemorrhage in patients over the age of 55. A very small proportion is due to cerebral venous sinus thrombosis. […] Hypertension is the strongest risk factor associated with intracerebral hemorrhage and long term control of elevated blood pressure has been shown to reduce the incidence of hemorrhage. Cerebral amyloid angiopathy, a disease characterized by deposition of amyloid beta peptides in the walls of the small blood vessels of the brain, leading to weakened blood vessel walls and an increased risk of bleeding; is also an important risk factor for the development of intracerebral hemorrhage. Other risk factors include advancing age (usually with a concomitant increase of cerebral amyloid angiopathy risk in the elderly), use of anticoagulants or antiplatelet medications, the presence of cerebral microbleeds, chronic kidney disease, and low low density lipoprotein (LDL) levels (usually below 70). The direct oral anticoagulants (DOACs) such as the factor Xa inhibitors or direct thrombin inhibitors are thought to have a lower risk of intracerebral hemorrhage as compared to the vitamin K antagonists such as warfarin. […] Traumatic intracerebral hematomas are divided into acute and delayed. Acute intracerebral hematomas occur at the time of the injury while delayed intracerebral hematomas have been reported from as early as 6 hours post injury to as long as several weeks.

• #8 Etiology and clinical presentation of intracerebral hemorrhage | STROKE MANUAL

  https://www.stroke-manual.com/intracerebral-hemorrhage-etiology-clinical-presentation/

  hypertensive arteriolopathy is the most common cause of primary intracerebral hemorrhage (ICH) […] longitudinal studies confirm that hypertension increases ICH risk by approximately 3.5 to 4 times, depending on BP severity […] hypertension leads to bleeding by two mechanisms: rupture of an artery affected by chronic hypertension and acute or subacute severe hypertension leading to rupture of a previously unaffected artery (malignant hypertension) […] typical localization: basal ganglia, thalamus, cerebellum, pons […] chronic hypertension induces arteriole thickening (hypertrophy), lipohyalinosis (protein deposition), and fibrinoid necrosis, making vessels prone to rupture […] findings suggesting hypertensive etiology: history of hypertension, typical ICH localization, absence of any other apparent cause of bleeding, left ventricular hypertrophy, leukoaraiosis on CT/MRI, hypertensive retinopathy

• #8 When Your Child Has Intracranial Hemorrhage | Saint Luke’s Health System

  https://www.saintlukeskc.org/health-library/when-your-child-has-intracranial-hemorrhage

  Causes can include: […] Trauma, such as a head injury […] Problems with abnormal blood vessels in the brain, such as: […] An abnormal formation of blood vessels (arteriovenous malformation) […] A balloon-like bulge in the wall of a blood vessel in the brain (aneurysm) […] Weakened blood vessels that occur with some brain tumors […] Sickle cell disease […] Diseases that make your child more prone to bleed, such as hemophilia or immune thrombocytopenia. […] Disease of the brain blood vessels, such as Moyamoya disease. […] Cancer […] High blood pressure. […] In up to 1 in 5 children, there is no cause.

• #8 Subdural Hematoma: Background, Pathophysiology, Etiology

  https://emedicine.medscape.com/article/1137207-overview

  A subdural hematoma (SDH) is a collection of blood below the inner layer of the dura but external to the brain and arachnoid membrane. Subdural hematoma is the most common type of traumatic intracranial mass lesion. […] SDH occurs not only in patients with severe head injury but also in patients with less severe head injuries, particularly those who are elderly or who are receiving anticoagulants. SDH may also be spontaneous or caused by a procedure, such as a lumbar puncture. […] Significant trauma is not the only cause of SDH. Chronic SDH can occur in the elderly after apparently insignificant head trauma. […] Causes of acute SDH include head trauma, coagulopathy or medical anticoagulation, nontraumatic intracranial hemorrhage due to cerebral aneurysm, arteriovenous malformation, or tumor, postsurgical causes, and spontaneous or unknown causes.

• #8 Intracerebral Hemorrhage – AANS

  https://www.aans.org/patients/conditions-treatments/intracerebral-hemorrhage/

  Intracerebral hemorrhage (bleeding into the brain tissue) is the second most common cause of stroke (15-30% of strokes) and the most deadly. […] Blood vessels carry blood to and from the brain. Arteries or veins can rupture, either from abnormal pressure or abnormal development or trauma. […] Hypertension: chronic high blood pressure causes changes to the arteries of the brain which can make them much more likely to rupture. […] Age: more common after age of 55, with buildup of protein in walls of arteries called amyloid angiopathy. […] Gender: more common in men. […] Race: affects African Americans and Asians more than whites; likely related to higher prevalence of Hypertension in those races. […] Previous history of stroke: increases risk 23 times. […] Alcohol use and street drugs: cocaine, amphetamines increases risk. […] Liver disease: increases risk due to issues with blood clotting. […] Use of blood thinners. […] Primary brain causes: tumors, vascular anomalies, infection and venous sinus thrombosis.

• #8 Intracranial hemorrhage – Wikipedia

  https://en.wikipedia.org/wiki/Intracranial_hemorrhage

  Intracranial hemorrhage (ICH) may be classified as either traumatic or non-traumatic (spontaneous). Traumatic causes include head trauma resulting from falls, vehicular accidents, or physical assault. Non-traumatic causes are more varied and often related to underlying conditions. Chronic hypertension is the most common non-traumatic cause, particularly in deep brain structures such as the basal ganglia, thalamus, pons, and posterior fossa. Other spontaneous causes include cerebral amyloid angiopathy, especially among the elderly, as well as bleeding disorders such as hemophilia and thrombocytopenia, vascular malformations like arteriovenous malformation (AVMs), and brain tumors. […] The use of anticoagulant or antiplatelet medications, such as warfarin and aspirin, has been associated with increased hematoma volume and expansion.

• #8 Intracerebral Hemorrhage (Brain bleeds) Causes, Symptoms and Treatment | MedPark Hospital

  https://www.medparkhospital.com/en-US/disease-and-treatment/intracerebral-hemorrhage

  Smoking, heavy alcohol consumption, and narcotics such as cocaine are all causes of cerebral aneurysms, which deteriorate and cause brain bleeding. […] Eclampsia and seizures occur in pregnant women and cause arterial spasms, unconsciousness, and bleeding in the brain. […] Neonatal intraventricular hemorrhage is common in premature babies weighing less than 1,500 grams. Neonatal intraventricular hemorrhage is bleeding into the ventricles that can cause disabilities and death. […] Abnormal collagen formation within the artery walls will gradually weaken the walls causing artery walls to tear and bleed.

• #8 Subdural hematoma Information | Mount Sinai – New York

  https://www.mountsinai.org/health-library/diseases-conditions/subdural-hematoma

  A subdural hematoma is most often the result of a severe head injury. This type of subdural hematoma is among the deadliest of all head injuries. The bleeding fills the brain area very rapidly, compressing brain tissue. This often results in brain injury and may lead to death. […] With any subdural hematoma, tiny veins between the surface of the brain and its outer covering (the dura) stretch and tear, allowing blood to collect. In older adults, the veins are often already stretched because of brain shrinkage (atrophy) and are more easily injured. […] A chronic subdural hematoma is more often seen in older adults. This type of subdural hematoma may be due to blood that persists after an acute injury or the result of slowly leaking blood. These can occur after a minor head injury and may go unnoticed for many days.

• #8 Intracranial hemorrhage – Wikipedia

  https://en.wikipedia.org/wiki/Intracranial_hemorrhage

  Besides from head injury, it may occur spontaneously, usually from a ruptured cerebral aneurysm (focal outpouchings with weakened walls on the arteries on the brain surface that are prone to rupture). […] Cerebral ateriovenous malformation (Cerebral AVM) is characterised by abnormal shunting between cerebral arteries and veins without going through capillaries. Instead the blood goes through a collection of small vessels from arteries to veins. These collection of abnormal small vessels is termed as „nidus”. This condition happens in 0.1% of the population has a risk of 2 to 4% per year for intracranial bleeding.

• #8 Intracranial Hemorrhage Associated with Sildenafil Use: A Very Rare Complication

  https://clinmedjournals.org/articles/ijnn/international-journal-of-neurology-and-neurotherapy-ijnn-7-099.php?jid=ijnn

  Intracerebral hemorrhage (ICH) is a serious cerebrovascular condition associated with high mortality and morbidity in adults. It can be classified as primary and secondary according to etiology. Primary intracranial hemorrhage often develops due to hypertension or amyloid angiopathy. Secondary intracranial hemorrhage causes are often tumor, aneurysm and vascular anomalies. Trauma is the most common reason of secondary ICH. […] Sildenafil citrate is a potent vasodilator agent used in the treatment of erectile dysfunction. Among its side effects, intracranial hemorrhage is a very rare complication. […] ICH secondary to sildenafil is a diagnosis of exclusion. The cranial CT angiography did not reveal any vascular anomalies or other reasons explaining the cause of ICH. […] Blood flow to the brain vessels increases during sexual intercourse. Sildenafil also increases blood flow to brain vessels, the relationship between sildenafil and intracranial bleeding can be established in this way. […] Consequently, high-dose sildenafil use may increase the risk of intracranial bleeding during sexual intercourse by causing cerebral vasodilation, although its relationship with the dose has not been clearly demonstrated.

• #9 Intracranial Hemorrhage: Types, Causes, and Outcomes | Integra LifeSciences

  https://codmansurgical.integralife.com/intracranial-hemorrhage-types-causes-and-outcomes/

  Subdural hematomas are usually caused by a tear in a vein, leading to a leakage of blood. […] While they occur in 25% of people with head injuries, according to Cleveland Clinic, they can also be the result of the use of blood thinners such as warfarin or aspirin, cerebrospinal fluid leakage, or natural brain atrophy from aging, which can cause the subdural space to get bigger and makes blood vessels more likely to break.

• #9 Etiology and clinical presentation of intracerebral hemorrhage | STROKE MANUAL

  https://www.stroke-manual.com/intracerebral-hemorrhage-etiology-clinical-presentation/

  bleeding into a preexisting lesion includes tumors, venous infarction, hemorrhagic arterial infarction, granuloma, and abscess […] vascular malformations such as aneurysm and vascular malformations are also causes of intracranial hematoma […] coagulopathy, including anticoagulants and antiplatelet therapy, can lead to ICH […] abnormal vessels (angiopathy) like cerebral amyloid angiopathy (CAA) and intracranial artery dissection contribute to the risk of ICH […] head injury can occasionally cause spontaneous hematoma […] drugs, particularly sympathomimetic drugs, significantly increase the risk of ICH by causing severe acute hypertension, vasospasm, and vessel fragility.

• #9 Intracerebral hemorrhage – Wikipedia

  https://en.wikipedia.org/wiki/Intracerebral_hemorrhage

  Intracerebral bleeds are the second most common cause of stroke, accounting for 10% of hospital admissions for stroke. High blood pressure raises the risks of spontaneous intracerebral hemorrhage by two to six times. More common in adults than in children, intraparenchymal bleeds are usually due to penetrating head trauma, but can also be due to depressed skull fractures. Acceleration-deceleration trauma, rupture of an aneurysm or arteriovenous malformation (AVM), and bleeding within a tumor are additional causes. Amyloid angiopathy is not an uncommon cause of intracerebral hemorrhage in patients over the age of 55. A very small proportion is due to cerebral venous sinus thrombosis. […] Hypertension is the strongest risk factor associated with intracerebral hemorrhage and long term control of elevated blood pressure has been shown to reduce the incidence of hemorrhage. Cerebral amyloid angiopathy, a disease characterized by deposition of amyloid beta peptides in the walls of the small blood vessels of the brain, leading to weakened blood vessel walls and an increased risk of bleeding; is also an important risk factor for the development of intracerebral hemorrhage. Other risk factors include advancing age (usually with a concomitant increase of cerebral amyloid angiopathy risk in the elderly), use of anticoagulants or antiplatelet medications, the presence of cerebral microbleeds, chronic kidney disease, and low low density lipoprotein (LDL) levels (usually below 70). The direct oral anticoagulants (DOACs) such as the factor Xa inhibitors or direct thrombin inhibitors are thought to have a lower risk of intracerebral hemorrhage as compared to the vitamin K antagonists such as warfarin. […] Traumatic intracerebral hematomas are divided into acute and delayed. Acute intracerebral hematomas occur at the time of the injury while delayed intracerebral hematomas have been reported from as early as 6 hours post injury to as long as several weeks.

• #9 Subdural Hematoma: What It Is, Causes, Symptoms & Treatment

  https://my.clevelandclinic.org/health/diseases/21183-subdural-hematoma

  Age: People 65 and older and babies are more at risk for getting subdural hematomas. As you age, your brain shrinks inside your skull. The space between your skull and brain widens. This makes the tiny veins in the membranes between your skull and brain stretch. These thinned, stretched veins are more likely to tear, even if you experience a minor head injury. Babies dont have strong neck muscles to protect themselves from head trauma. When someone shakes a baby forcefully, they can develop a subdural hematoma (shaken baby syndrome). […] Playing contact sports: People who play high-impact or extreme sports (like football, rugby or snowboarding) have an increased risk of a subdural hematoma. […] Taking blood thinners: Blood thinners (anticoagulants) slow down your clotting process or prevent blood from clotting at all. If your blood doesnt clot, bleeding around your brain can be severe and long-lasting, even after a relatively minor injury.

• #9

  https://www.nhs.uk/conditions/subdural-haematoma/causes/

  This is thought to be because most people’s brains shrink to some degree as they get older. […] Drinking too much alcohol over a long period of time can also gradually cause the brain to shrink and make the brain’s blood vessels more vulnerable to damage. […] Taking medicine to reduce your risk of blood clots can increase your risk of developing a chronic subdural haematoma. […] This is because it means your blood clots less easily and any bleeding caused by a head injury is likely to be more severe. […] An increased risk of chronic subdural haematoma has also been linked with: epilepsy a condition that causes repeated fits (seizures), haemophilia a condition that stops your blood clotting properly, having a ventriculoperitoneal shunt a thin tube implanted in the brain to drain away any excess fluid to treat hydrocephalus, brain aneurysms a bulge in one of the brain’s blood vessels that can burst and cause bleeding on the brain, cancerous (malignant) brain tumours.

• #9 Intracerebral Hemorrhage – StatPearls – NCBI Bookshelf

  https://www.ncbi.nlm.nih.gov/books/NBK553103/

  Over 60% of primary bleeds are related to hypertension, and these hematomas are most commonly seen in the posterior fossa, pons, basal ganglia, and thalamus. […] Lobar hemorrhages in older patients are often the distinguishing feature of amyloid angiopathy. […] In contrast, when an ICH is due to an underlying structural pathology, such as vascular anomalies or malignant tissue, they are categorized as secondary ICH. […] Vascular lesions include arteriovenous malformations, cavernous angiomas, cerebral aneurysms, and aorto-venous fistulae, and these are often the cause of ICH in the young, otherwise healthy, population. […] Cerebral hematomas may also be secondary to a primary or metastatic lesion or even the hemorrhagic conversion of a recent ischaemic infarct. […] Further, congenial and acquired bleeding diathesis is a common factor in ICHs, becoming more common due to the large population of adults on an anticoagulant (i.e., warfarin) and antiplatelet (aspirin) therapy.

• #9 Brain hemorrhage: Causes, symptoms, and treatments

  https://www.medicalnewstoday.com/articles/317080

  Several factors can lead to a brain hemorrhage. These factors include: head trauma or injury, cerebral aneurysm, or a weakened bulge in a brain artery, extremely high blood pressure, blood vessel anomalies, blood or bleeding disorders, liver disease, brain tumor, recreational drug use. […] Most of the nontraumatic intracerebral hemorrhages that occur in children are due to anomalies in the blood vessels. Other possible causes include blood diseases, brain tumors, septicemia, or the use of alcohol or recreational drugs. […] In infants, a brain hemorrhage can occur due to a birth injury or blunt force trauma to a pregnant persons abdomen. […] Head injuries, certain medical conditions, and recreational drug use can increase the risk of brain hemorrhage.

• #10 Etiology and clinical presentation of intracerebral hemorrhage | STROKE MANUAL

  https://www.stroke-manual.com/intracerebral-hemorrhage-etiology-clinical-presentation/

  bleeding into a preexisting lesion includes tumors, venous infarction, hemorrhagic arterial infarction, granuloma, and abscess […] vascular malformations such as aneurysm and vascular malformations are also causes of intracranial hematoma […] coagulopathy, including anticoagulants and antiplatelet therapy, can lead to ICH […] abnormal vessels (angiopathy) like cerebral amyloid angiopathy (CAA) and intracranial artery dissection contribute to the risk of ICH […] head injury can occasionally cause spontaneous hematoma […] drugs, particularly sympathomimetic drugs, significantly increase the risk of ICH by causing severe acute hypertension, vasospasm, and vessel fragility.

• #10 Intracranial Hemorrhages: Types, Risk Factors, and Symptoms

  https://www.healthline.com/health/neurological-health/extradural-hemorrhage

  Intracranial hemorrhage (ICH) refers to acute bleeding inside your skull or brain. Its a life-threatening emergency. […] Most ICHs are due to a head injury. Any activities or lifestyle choices that put you at risk for a head injury can lead to ICH. […] Factors that increase your risk include: a family history of ICH, heavy alcohol use, hypertension, cigarette smoking, the use of certain drugs, including amphetamines, cocaine, and MDMA (often called ecstasy), extreme physical exertion. […] A subarachnoid hemorrhage is when theres bleeding between the brain and the thin tissues that cover the brain. The most common cause is trauma, but it can also be caused by rupture of a major blood vessel in the brain, such as from an intracerebral aneurysm. […] Intracerebral hemorrhage is when theres bleeding inside of your brain. This is the most common type of ICH that occurs with a stroke. Its not usually the result of injury.

• #10 Subdural Hematoma: What It Is, Causes, Symptoms & Treatment

  https://my.clevelandclinic.org/health/diseases/21183-subdural-hematoma

  Hemophilia: This is an inherited bleeding disorder that prevents your blood from clotting. People with hemophilia have a higher risk of uncontrolled bleeding after an injury. […] Alcohol use disorder: Drinking excessive amounts of alcohol causes liver damage over time. A damaged liver cant produce enough of the proteins that help your blood clot. This increases your risk of uncontrolled bleeding.

• #10 Subdural Hematoma: Causes, Types, Symptoms, Risks & Recovery

  https://www.webmd.com/brain/subdural-hematoma-symptoms-causes-treatments

  Subdural hematomas are usually caused by a head injury from a fall, motor vehicle collision, or an assault. The sudden blow to the head tears blood vessels that run along the surface of the brain. This is referred to as an acute subdural hematoma. […] People with a bleeding disorder or those who take blood thinners are also more likely to develop a subdural hematoma. A relatively minor head injury can cause the condition in people with a bleeding tendency. Finally, people with alcohol use disorder have a higher risk of developing a subdural hematoma, as alcohol can cause the brain to shrink, weakening the blood vessels in the tissues surrounding it. […] In a chronic subdural hematoma, small veins on the outer surface of the brain may tear, causing bleeding in the subdural space. Symptoms may not show up for several days or weeks. […] Elderly people are at a higher risk for chronic subdural hematoma because natural age-related brain shrinkage causes these tiny veins to stretch and become more vulnerable to tearing.

• #10 Etiology of tumor-related intracranial hemorrhage (Chapter 3) – Intracerebral Hemorrhage

  https://www.cambridge.org/core/books/intracerebral-hemorrhage/etiology-of-tumorrelated-intracranial-hemorrhage/C9E1489836DF96684EA605AEDCCF0F8E

  Cancer-related intracerebral bleeding is an uncommon cause of hemorrhage and represents only a fraction of all non-traumatic intracranial hemorrhages (ICHs). The mechanisms of intratumoral hemorrhage remain unclear, but include tumor necrosis, rupture of tumor blood vessels and invasion of parenchymal blood vessels by tumor. […] Metastatic brain tumors can cause intracerebral hemorrhage. Brain metastases from any primary tumor can cause bleeding, but the different primaries have a wide variability in their tendency to bleed. […] A tumor embolus may cause an aneurysm that can lead to potentially fatal intraparenchymal or subarachnoid hemorrhages. The clinical presentation of intratumoral hemorrhage is often indistinguishable from spontaneous ICH from more typical etiologies such as hypertension. […] The prognosis of a hemorrhagic neoplasm is primarily determined by the prognosis of the underlying malignancy.

• #10 Brain hemorrhage: Causes, symptoms, and treatments

  https://www.medicalnewstoday.com/articles/317080

  Several factors can lead to a brain hemorrhage. These factors include: head trauma or injury, cerebral aneurysm, or a weakened bulge in a brain artery, extremely high blood pressure, blood vessel anomalies, blood or bleeding disorders, liver disease, brain tumor, recreational drug use. […] Most of the nontraumatic intracerebral hemorrhages that occur in children are due to anomalies in the blood vessels. Other possible causes include blood diseases, brain tumors, septicemia, or the use of alcohol or recreational drugs. […] In infants, a brain hemorrhage can occur due to a birth injury or blunt force trauma to a pregnant persons abdomen. […] Head injuries, certain medical conditions, and recreational drug use can increase the risk of brain hemorrhage.

• #11 Brain Hemorrhage (Bleeding): Causes, Symptoms, Treatments

  https://www.webmd.com/brain/brain-hemorrhage-bleeding-causes-symptoms-treatments

  Blood or bleeding disorders. Hemophilia and sickle cell anemia can both cause decreased levels of platelets, blood cells that stop bleeding by forming clots. […] Liver disease. This condition is linked to increased bleeding in general. […] Brain tumors. More studies need to be done to understand which types of tumors are likely to bleed.

• #11 Intracranial Hematomas – Injuries and Poisoning – Merck Manual Consumer Version

  https://www.merckmanuals.com/home/injuries-and-poisoning/head-injuries/intracranial-hematomas

  Chronic subdural hematomas are more common among people with alcohol use disorder, older adults, and people who take medications that make blood less likely to clot (anticoagulants or antiplatelets). […] Intracerebral hematomas are common after a severe head injury. They can be caused by bruising of the brain (a cerebral contusion). […] Cerebral edema and its complications account for most deaths.

Zobacz więcej