Materiały źródłowe

• #1 Hair loss – Symptoms and causes – Mayo Clinic

  https://www.mayoclinic.org/diseases-conditions/hair-loss/symptoms-causes/syc-20372926

  Hair loss (alopecia) can affect just your scalp or your entire body, and it can be temporary or permanent. It can be the result of heredity, hormonal changes, medical conditions or a normal part of aging. […] Baldness typically refers to excessive hair loss from your scalp. Hereditary hair loss with age is the most common cause of baldness. […] Hair loss is typically related to one or more of the following factors: Family history (heredity). The most common cause of hair loss is a hereditary condition that happens with aging. This condition is called androgenic alopecia, male-pattern baldness and female-pattern baldness. It usually occurs gradually and in predictable patterns a receding hairline and bald spots in men and thinning hair along the crown of the scalp in women. […] Hormonal changes and medical conditions. A variety of conditions can cause permanent or temporary hair loss, including hormonal changes due to pregnancy, childbirth, menopause and thyroid problems. Medical conditions include alopecia areata (al-o-PEE-she-uh ar-e-A-tuh), which is immune system related and causes patchy hair loss, scalp infections such as ringworm, and a hair-pulling disorder called trichotillomania (trik-o-til-o-MAY-nee-uh).

• #1 Hair loss: Who gets and causes

  https://www.aad.org/public/diseases/hair-loss/causes/18-causes

  What causes hair loss? […] Hair loss has many causes. Whats causing your hair loss can determine whether your hair: […] Causes of hair loss […] Both men and women develop this type of hair loss, which is the most common cause of hair loss worldwide. In men, its called male pattern hair loss. Women get female pattern hair loss. Regardless of whether it develops in a man or women, the medical term is androgenic alopecia. […] No matter which term you use, it means that youve inherited genes that cause your hair follicles (what each hair grows out of) to shrink and eventually stop growing hair. […] With age, most people notice some hair loss because hair growth slows. […] Alopecia areata is a disease that develops when the bodys immune system attacks hair follicles (what holds the hair in place), causing hair loss.

• #1 Causes – American Hair Loss Association

  https://www.americanhairloss.org/mens-hair-loss/causes/

  Androgenic alopecia, commonly known as male pattern baldness (MPB), is the primary cause of hair loss in men, and it can be triggered anytime after puberty due to the genetic susceptibility to the effects of Dihydrotestosterone (DHT) which varies widely. […] While there can be various reasons for hair loss, such as serious illness, reaction to medications, or exceptionally stressful events, heredity is often to blame for most cases of hair loss in men. […] Despite the myth that baldness is solely inherited from the mother’s father, the reality is that the genetic component of MPB is not fully understood and is believed to be polygenic, involving multiple genes. […] Dihydrotestosterone (DHT) is a by-product of testosterone, formed through the action of the enzyme Type I and II 5-alpha-reductase, which is present in the oil glands of the hair follicles.

• #1 Hair Loss in Women: Causes, Treatment & Prevention

  https://my.clevelandclinic.org/health/diseases/16921-hair-loss-in-women

  There are several possible causes of hair loss in women, including: Damaged hair follicles. Changes to your eating habits (rapid weight loss). Stress. Chemical hair treatments. Treatments like chemotherapy or radiation therapy. An underlying health condition like an abnormal thyroid, anemia, vitamin deficiency, etc. Hormonal changes (pregnancy, menopause). Certain medications and supplements (blood pressure medicines, gout medicines and high doses of vitamin A). Genetic predisposition (it runs in your biological family history). […] Your body experiences changes during menopause. This can affect your hair and cause: Hair growing where it didn’t before. The hair you have thinning out. These changes happen due to varying levels of hormones during menopause. In addition, your hair follicles shrink. This makes your hair grow finer (thinner).

• #1 Hair loss: Who gets and causes

  https://www.aad.org/public/diseases/hair-loss/causes/18-causes

  If you receive chemotherapy or have radiation treatment to your head or neck, you may lose all (or most of) your hair within a few weeks of starting treatment. […] A few months after giving birth, recovering from an illness, or having an operation, you may notice a lot more hairs in your brush or on your pillow. […] If you color, perm, or relax your hair, you could be damaging your hair. Over time, this damage can lead to hair loss. […] If you often wear your hair tightly pulled back, the continual pulling can lead to permanent hair loss. The medical name for this condition is traction alopecia. […] A common cause of this imbalance is polycystic ovary syndrome (PCOS). It leads to cysts on a womans ovaries, along with other signs and symptoms, which can include hair loss. […] A scalp infection can lead to scaly and sometimes inflamed areas on your scalp.

• #1 Alopecia – StatPearls – NCBI Bookshelf

  https://www.ncbi.nlm.nih.gov/books/NBK538178/

  Alopecia is the absence or loss of hair in an area where it is expected to be present. Recognized as a sign or symptom arising from heterogeneous etiologies, alopecia is broadly classified as nonscarring (the most prevalent), and scarring (cicatricial). […] The etiology of alopecia varies according to the type and subtype of alopecia. Some of the causative mechanisms are given below: […] The hair follicles are preserved in nonscarring alopecia; therefore, hair loss is potentially reversible, and hair regrowth is possible. Nonscarring alopecias include androgenetic alopecia, alopecia areata, telogen effluvium, anagen effluvium, traction alopecia, trichotillomania, and alopecia syphilitica, among others. […] Androgenetic alopecia is referred to as androgenic alopecia, hereditary alopecia, male balding, female-pattern alopecia, and female-pattern hair loss, to name a few.

• #1 Causes for Hair Loss | Northwestern Medicine

  https://www.nm.org/healthbeat/healthy-tips/causes-for-hair-loss

  Alopecia areata is a common autoimmune skin disease that affects as many as 6.8 million people in the United States. This disease causes the immune system to attack the hair follicles, which can lead to complete hair loss on the scalp (alopecia totalis) and in extreme cases, the entire body (alopecia universalis). […] Your immune system makes a mistake and attacks part of your own body your hair. […] Treatment may include applying a topical cortisone cream, as well as taking an immune-suppressing medication to help the hair grow back. […] If youre experiencing hair loss or thinning, speak to your dermatologist to see if there could be an underlying issue.

• #1 7 Causes Of Hair Loss You Must Know – Why Hair Fall Happens | RichFeel

  https://www.richfeel.com/hair-fall-cause/

  Diffuse hair loss must be understood as a certain type of hair loss pattern. […] Loss of telogen-phase hairs is the most common in diffuse hair loss type. […] Diffuse hair loss in both males and females can be a direct result of emotional stress, physiological problems, and nutritional deficiencies. […] Malnutrition is among the many common causes of hair loss. […] Various hormonal disturbances can be among the top causes of diffuse hair loss. […] In hypothyroidism, there is less thyroid production due to an underactive thyroid gland which leads to loss of scalp hair and thinning of hair. […] Certain metabolic disorders or loss of electrolytes can also become one of the main causes of hair loss. […] Many therapeutic agents when administered are known to cause hair loss. […] Several autoimmune disorders like SLE, RA, and Psoriasis are main causes of hair loss due to lesions involving the scalp or therapy with cytotoxic drugs.

• #1 Hair loss: Who gets and causes

  https://www.aad.org/public/diseases/hair-loss/causes/18-causes

  A possible side effect of some medications is hair loss. […] Many people who have plaque psoriasis develop psoriasis on their scalp at some point. This can lead to hair loss. […] Some people pull on their hair, often to relieve stress. […] This condition develops when inflammation destroys hair follicles. Once destroyed, a hair follicle cannot grow hair. […] Left untreated, a sexually transmitted infection (STI) can lead to hair loss. […] If you have a problem with your thyroid, you may see thinning hair. […] If youre not getting enough of one or more of these, you can have noticeable hair loss. […] People can develop hair loss where boots, socks, or tight clothing frequently rubs against their skin. The medical term for this is frictional alopecia. […] Being slowly poisoned can lead to hair loss. Poisons that can cause hair loss include arsenic, thallium, mercury, and lithium. […] While many causes of hair loss can be treated successfully, the key to effective treatment is to find out whats causing the hair loss.

• #1 Hair loss – Symptoms and causes – Mayo Clinic

  https://www.mayoclinic.org/diseases-conditions/hair-loss/symptoms-causes/syc-20372926

  A very stressful event. Many people experience a general thinning of hair several months after a physical or emotional shock. This type of hair loss is temporary. […] Hairstyles and treatments. Excessive hairstyling or hairstyles that pull your hair tight, such as pigtails or cornrows, can cause a type of hair loss called traction alopecia. Hot-oil hair treatments and permanents also can cause hair to fall out. If scarring occurs, hair loss could be permanent.

• #1 Causes of Hair Loss in Women: Medical Reasons and More

  https://www.webmd.com/skin-problems-and-treatments/hair-loss/women-hair-loss-causes

  You can have hair loss as a result of physical stress, like when you give birth or have surgery, or intense emotional stress, like a death in the family, divorce, or unemployment. […] Several types of hormonal changes can lead to hair loss. They include: Menopause. You can lose hair during menopause as your estrogen and progesterone levels drop. […] Hair usually regrows when your hormones get back to normal. […] Traction alopecia is a type of hair loss that’s brought on by the way you style your hair. […] The treatment for hair loss depends on what’s causing it. If a medical condition is the cause, treating that condition should help with the hair loss. If it’s caused by a medication, your doctor can change your drug or the dosage.

• #1 Why is my hair falling out? 10 causes of hair loss

  https://www.medicalnewstoday.com/articles/327005

  This causes more hair than usual to fall out, sometimes in handfuls. […] Some possible causes of telogen effluvium include: childbirth, surgery, severe stress, rapid weight loss, thyroid conditions, certain medications. […] Anagen effluvium causes large amounts of hair to rapidly fall out during the anagen (growth) phase of the hair cycle. […] Alopecia areata is an autoimmune condition that causes hair to fall out suddenly. […] Traction alopecia is hair loss due to pulling hair into tight hairstyles, which causes it to break and come loose. […] Certain medications have side effects that can cause hair to fall out. […] Nutritional deficiencies can cause hair to fall out. […] Ringworm is a fungal infection that can cause hair loss. […] Male and female pattern baldness are the main cause of hair loss. […] Certain conditions, including anagen effluvium and alopecia areata, can cause hair to fall out suddenly. […] A vitamin D deficiency may link to hair loss. […] Other vitamins and minerals may also play a role in hair loss.

• #1 Hair Loss: Common Causes and Treatment | AAFP

  https://www.aafp.org/pubs/afp/issues/2017/0915/p371.html

  A family history of hair loss supports the diagnosis of androgenetic alopecia. […] Alopecia areata is an acute, patchy alopecia that affects up to 2% of the population with no difference between sexes. […] The etiology is unknown, but the pathogenesis is likely autoimmune. […] Telogen effluvium is a nonscarring, noninflammatory alopecia of relatively sudden onset, with similar incidences between sexes and age groups. […] It occurs when large numbers of hairs enter the telogen phase and fall out three to five months after a physiologic or emotional stressor. […] The list of inciting factors is extensive and includes severe chronic illnesses, pregnancy, surgery, high fever, malnutrition, severe infections, and endocrine disorders. […] Anagen effluvium is abnormal diffuse hair loss (usually abrupt) during the anagen phase due to an event that impairs the mitotic or metabolic activity of the hair follicle.

• #1 Hair Loss: Types of Alopecia and Causes of Thinning Hair

  https://www.webmd.com/skin-problems-and-treatments/hair-loss/understanding-hair-loss-basics

  Hair loss can happen to anyone. Your genes, certain medical conditions, treatments for disease, and other factors can contribute to partial or, sometimes, total hair loss not just on your head but on other parts of your body as well. […] Doctors dont know why certain hair follicles are programmed to have a shorter growth period than others. But several factors may influence hair loss, such as: […] Hormonal imbalance, such as abnormal levels of androgens (male hormones normally produced by both men and women), may lead to hair loss. […] Genes from both male and female parents may influence a persons predisposition to male or female pattern baldness. […] Stress, illness, and childbirth can cause temporary hair loss. Ringworm, caused by a fungal infection, can also cause hair loss. […] Drugs, including chemotherapy drugs used in cancer treatment, blood thinners, beta-adrenergic blockers used to control blood pressure, and birth control pills, can cause temporary hair loss. […] Medical conditions. Thyroid disease, lupus, diabetes, iron deficiency anemia, eating disorders, and anemia can cause hair loss. […] Deficiencies in vitamins A, B, C, D, and E, as well as iron and zinc, have been associated with hair loss.

• #1 Chapter 4: Other Hair Loss Causes – Laurel Heights San Francisco, CA: Hair Doc

  https://www.hairdoc.com/contents/chapter-4-other-hair-loss-causes

  Nutritional deficiencies are rarely a cause of hair loss despite the marketing of a wide variety of nutritional supplements that claim to somehow enhance hair growth or hair health. Of the possible nutritional deficiencies that can cause thinning hair, iron deficiency anemia is most common, and when it occurs it is more frequently seen in women. […] Certain poisons can cause hair loss when consumed in less than lethal doses. In many cases, hair loss is one of the first signs of poisoning. […] There are many categories of prescription drugs that present a risk of temporary hair loss as a possible side effect. Chemotherapy drug treatment almost always causes hair loss because the drugs target rapidly dividing cells typical of cancer. […] Ionizing radiation such as the type used for cancer treatment, also affects rapidly dividing cells most severely, and, as a result of exposure to radiation, actively producing hair follicles are shut down.

• #1 Uncover Hair Loss Causes & Solutions for Men & Women – Here’s How!

  https://ishrs.org/patients/types-of-hair-loss/

  Hormonal or thyroid disorders may also contribute, as can nutritional deficiencies or certain medications. […] Patients with untreated hyper- or hypothyroidism may present with hair shedding. […] Low levels of iron, zinc, and vitamin D have all been linked with hair shedding in the medical literature. […] High dose vitamin A, isotretinoin, and certain cardiovascular drugs such as beta-blockers (metoprolol, propranolol) and low molecular weight heparin (and less commonly warfarin) have been linked with hair shedding. […] This type of hair loss occurs due to a disruption of the hair growth cycle while it is in its actively growing (anagen) phase. […] Alopecia Areata is an autoimmune form of hair loss that presents with small round-to-oval patches on the scalp but can affect larger, more confluent areas, as well as the eyebrows, eyelashes, and body hair.

• #1 Types of Hair Loss | NYU Langone Health

  https://nyulangone.org/conditions/hair-loss/types

  Anagen effluvium is rapid hair loss resulting from medical treatment, such as chemotherapy. […] Alopecia areata is an autoimmune condition, which means the bodys immune system attacks healthy tissues, including the hair follicles. […] Tinea capitis, also called scalp ringworm, is a fungal infection of the scalp thats a common cause of hair loss in children. […] Cicatricial alopecia, also known as scarring alopecia, is a rare type of hair loss in which inflammation destroys hair follicles and causes scar tissue to form in their place. […] Hair loss caused by folliculitis decalvans, an inflammatory disorder that leads to the destruction of hair follicles, is often accompanied by redness, swelling, and lesions on the scalp that may be itchy or contain pus, known as pustules. […] Central centrifugal cicatricial alopecia may occur as a result of hair products or styling techniques that damage hair follicles.

• #1 Common Causes of Hair Loss: Adrienne O’Connell, DO: Aesthetics

  https://www.lagunabeachaesthetics.com/blog/common-causes-of-hair-loss

  Some hair loss is only temporary, and some may be inevitable. Here are some of the most common reasons your hair may be thinning or falling out. […] If you’re constantly under high stress, you may pay for it in strands of hair. Whether you work under pressure, have a rocky relationship, or lost a loved one, anxiety has physical effects, including hair loss. Physical stress can also lead to hair shedding; pregnancy, illness, and injury can be physically overwhelming and may cause temporary hair loss. […] Certain hairstyles, cornrows, braids, ponytails, updos, and any hairstyle that constantly pulls your tresses back can lead to hair loss. […] Skin conditions that affect your scalp may cause a change in the texture of the skin on your head and cause some bald spots. Hair usually regrows once the infection is resolved.

• #1 Hair loss – Causes, Symptoms, Treatments, Grow new hair | MedPark Hospital

  https://www.medparkhospital.com/en-US/disease-and-treatment/hair-loss

  Hereditary hair loss is the most common cause of hair loss, which usually occurs in a gradual and predictable pattern and is more common in males than females. […] Aging may decrease hormone production with shortened hair’s life cycle, resulting in more hair loss and lowering hair density on the scalp. […] Stress, or exposure to traumatic events with psychological impact, causes the body to produce cortisol, a stress hormone that causes hair loss and thinning. […] Nutritional deficiencies, such as low iron or protein levels. […] Too-tight hairstyles, such as a ponytail or braid, can cause traction alopecia.

• #1 What Causes Hair Loss & Baldness? 3 Potential Reasons | ISDIN

  https://www.isdin.com/us/blog/beauty/hair-and-nails/what-causes-hair-loss-top-7-reasons/

  Pollution has been connected to skin damage and premature aging, but did you know that it may also affect our hair? Environmental pollution contributes to an increase of free radicals in the body, which in turn triggers a process called oxidative stress. […] Studies have shown that nutritional deficiency and sudden weight loss can impact both the structure of the hair and new hair growth meaning if you’re not getting the vitamins and minerals your body needs, your hair will feel it too. […] A wide range of conditions are connected to hair loss, including polycystic ovary syndrome (PCOS), skin conditions such as psoriasis and seborrheic dermatitis, and autoimmune conditions like lupus. […] It is also important to know that hair loss can be associated with some medications, though hair loss related to medical conditions or medication can often be reversed.

• #1 Hair Loss – Harvard Health

  https://www.health.harvard.edu/a_to_z/hair-loss-a-to-z

  Hair can fall out for many different reasons. […] This common form of hair loss happens two to three months after a major body stress, such as a prolonged illness, major surgery or serious infection. […] Hair loss can be a side effect of certain medications, including lithium, beta-blockers, warfarin, heparin, amphetamines and levodopa. […] Hair loss can be one of the symptoms of a medical illness, such as systemic lupus erythematosus, syphilis, a thyroid disorder, a sex-hormone imbalance or a serious nutritional problem. […] This form of patchy hair loss happens when certain types of fungi infect the scalp. […] This is an autoimmune disease that causes hair to fall out in one or more small patches. […] This form of hair loss is caused by hairdressing techniques that pull the hair, expose hair to extreme heat and twisting or damage the hair with strong chemicals.

• #1

  https://www.eastcarolinadermatology.com/common-causes-of-hair-loss

  Hair loss is usually a temporary side effect of these cancer treatment methods, and hair growth typically resumes within a few months after treatment ends. […] Hair loss results from the gradual destruction of hair follicles. These follicles become dormant and cannot produce new hair or lose their ability to grow. […] The gradual destruction of hair follicles over a long period can result in permanent hair loss. […] Premature hair loss can signify a severe physical or psychological disorder. […] You should visit a doctor if you exhibit hair loss as it may be a side effect of several conditions, including the following. […] You may have a condition that causes your body to produce fewer scalp cells or sebum (the oil produced by glands on the scalp). […] Diseases such as lupus, thyroid issues like hypothyroidism (low thyroid hormone levels), and diabetes can also cause hair loss.

• #1 Types of Disease That Cause Hair Loss Manhattan, NYC – The Hair Loss Doctors

  https://www.hairlossdoctors.com/diseases-and-hair-loss/

  Polycystic Ovarian Syndrome: This hormonal disorder can cause problems with hair growth, leading to loss and thinning. […] When the immune system attacks the hair follicles within the skin, it can cause weakened or thinning hair, damaged follicles that can no longer support hair, or permanent hair loss. […] Additionally, many of the medications that are prescribed to treat lupus, such as immune system suppressants, can also contribute to hair loss. […] One of the side effects of inadequate thyroid hormone is hair loss. […] Unfortunately, some of the medications that are commonly prescribed for thyroid disorders can also contribute directly or indirectly to hair loss. […] Androgenetic alopecia, commonly known as male or female pattern baldness, is a leading cause of hair loss. […] Androgenetic alopecia is a type of hair loss that is caused by DHT (dihydrotestosterone), a hormone which shrinks the hair follicles. […] There are three main factors that can contribute to the likelihood that a patient will experience pattern hair loss: Androgens (male sex hormones), Genetics, Advancing age.

• #1 Types of Disease That Cause Hair Loss Manhattan, NYC – The Hair Loss Doctors

  https://www.hairlossdoctors.com/diseases-and-hair-loss/

  Bald spots, thinning, and breakage can be symptoms of a serious underlying health condition such as alopecia, lupus, thyroid issues, and other common types of disease that cause hair loss. […] Hair loss often occurs in patients suffering or recovering from a medical condition or illness. […] Some of the most common diseases include: Lupus: This long-term autoimmune disease causes a myriad of symptoms that may affect your skin, resulting in hair loss. […] Alopecia Areata: An autoimmune disease that affects the skin and scalp, causing hair to suddenly fall out. […] Thyroid Problems: An overactive or underactive thyroid can both be contributing factors to hair loss. […] Cancer: Cancer such as Hodgkins lymphoma may cause hair loss but typically, chemotherapy is the primary cause. […] Eating Disorders: Eating disorders like anorexia and bulimia not only stress the body but also divert important nutrients away from the cells that help grow healthy hair.

• #1 Hair loss: Overview

  https://www.aad.org/public/diseases/hair-loss/causes/fall-out

  We lose our hair for many (with emphasis on many) reasons. Ringworm is one. A more common cause is hereditary hair loss. […] Your hair care or too-tight hairstyle could also be causing your hair loss. Some people who are otherwise healthy develop alopecia areata, a disease that can cause hair loss anywhere on their body. These are some the many reasons we see our hair fall out. […] The key to getting results is knowing the true cause of your hair loss. […] Board-certified dermatologists successfully diagnose the cause of hair loss for many people. […] The sooner you find the cause, the better your outcome. The less hair you lose, the more successful treatment (or prevention) tends to be. […] Some products are effective. Minoxidil (Rogaine) can safely and effectively treat a few causes of hair loss. People who have hereditary hair loss can have some regrowth with this product. […] Again, the key to getting results is to know the cause.

• #1

  https://myhealth.alberta.ca/Health/pages/conditions.aspx?hwid=aa151672

  When your hair loss is inherited, your hair won’t grow back naturally. Treatment can help some hair grow back and prevent more from falling out, but you probably won’t get all your hair back. And treatment doesn’t work for everyone. […] If a disease, medicine, or stress is the cause of hair loss, then treating the disease, changing medicines, or managing stress may stop the hair loss.

• #1 Hair Loss (Alopecia): Causes, Symptoms, and Regrowth Options

  https://www.healthline.com/health/hair-loss

  Tinea capitis, also called ringworm of the scalp, is a fungal infection that can affect the scalp and hair shaft. […] Traction alopecia results from too much pressure and tension on the hair, often from wearing it in tight styles, like braids, ponytails, or buns. […] An increased risk of hair loss is connected with certain illnesses. These include polycystic ovary syndrome (PCOS), scalp psoriasis, sexually transmitted infections, such as syphilis, and thyroid disease. […] Hair loss can also be a side effect of some medications, especially chemotherapy medications to treat cancers. […] Stopping hair loss indefinitely depends upon the underlying cause. As a general rule, the sooner you treat hair loss, the more likely you will be able to reverse or reduce the rate of hair loss. […] Some hair loss causes cant be reversed. This is true for damaged hair follicles from too-tight hairstyles, damaged hair follicles from chemicals applied to the hair, and damages caused by certain autoimmune diseases.

• #2 Hair Loss: Causes, Treatments and Prevention Options

  https://my.clevelandclinic.org/health/diseases/21753-hair-loss

  It’s typical to lose some hair every day as part of your hairs usual growth cycle. But illness, hormonal changes, stress, aging and inherited conditions can interfere with your hairs growth cycle. More hair falls out, but new strands dont always grow back. […] When you start to shed more strands and fewer or none grow back the condition is considered alopecia (hair loss). There are several types of hair loss, and it can affect adults of either sex and even children. […] Hair loss has many possible causes. The most common include: Hereditary hair loss from genetics (genes you inherit from your parents). […] Hormonal changes (such as pregnancy, childbirth or menopause). […] Medical treatment (such as chemotherapy and certain medications). […] Stressful events (like having surgery or losing a loved one). […] Hair loss can sometimes be a sign of an underlying disease. But hair loss itself poses no medical risk.

• #2 Hair Loss (Alopecia): Causes, Symptoms, and Regrowth Options

  https://www.healthline.com/health/hair-loss

  Hair loss (alopecia) is a fairly common occurrence. While its more prevalent in older adults, anyone can experience it, including children. […] Hair loss can develop gradually over years or happen abruptly. Depending on the underlying cause, it may be temporary or permanent. […] There are several types of hair loss, some are common and some are rarer, and each with different underlying causes. […] Depending on the type of hair loss, it can be the result of genetics, internal causes, or external causes. […] Androgenic alopecia refers to hereditary hair loss, like male pattern baldness or female pattern baldness, and is also known as pattern alopecia because it can happen to both males and females. […] Its also the most common cause of hair loss, affecting up to 50% of people. […] Hair loss related to androgenic alopecia tends to happen gradually.

• #2 Androgenetic Alopecia – StatPearls – NCBI Bookshelf

  https://www.ncbi.nlm.nih.gov/books/NBK430924/

  Androgenetic alopecia is a genetically predetermined disorder due to an excessive response to androgens. This condition affects up to 50 percent of males and females and is characterized by progressive loss of terminal hair of the scalp any time after puberty. […] Androgenetic alopecia, as indicated by its name, possesses a distinct genetic predisposition and is predominantly due to an excessive response to androgen. This condition is characterized by a polygenic nature with varying penetrance degrees, influenced by maternal and paternal genes. A familial predisposition towards androgenetic alopecia exists, with sons having 5 to 6 times higher relative risk if their fathers experienced balding. […] The onset of pattern alopecia is contingent upon androgen receptor activation and is typically observed after puberty. Prepubertal castration and individuals with androgen insensitivity syndrome do not exhibit pattern baldness. Both hormone metabolism and androgen receptors play a key role in developing pattern alopecia.

• #2 Male Hair Loss Causes | Causes Of Hair Loss In Men

  https://www.bernsteinmedical.com/hair-loss/men/causes/

  DHT causes “miniaturization” of hair follicles. Hereditary hair loss in men (androgenetic alopecia) is caused by the action of the hormone dihydrotestosterone (DHT) on genetically susceptible scalp hair follicles. […] The hormone felt to be directly involved in androgenetic alopecia is a derivative of testosterone called dihydrotestosterone (DHT). DHT, formed by the action of the enzyme 5-a reductase on testosterone, binds to special receptor sites on the cells of genetically susceptible hair follicles causing miniaturization and eventual balding. […] In summary, Androgenetic alopecia is felt to be a “dominant” genetic trait that is passed down from your mother or father, but with a slight predisposition to the maternal side due to the presence of an important androgen receptor gene on the X chromosome. In order for hair loss to become apparent, the trait must be expressed – through changes in the production of hormones or changes due to the aging process.

• #2 Hair Loss in Women: Causes, Treatment & Prevention

  https://my.clevelandclinic.org/health/diseases/16921-hair-loss-in-women

  There are several possible causes of hair loss in women, including: Damaged hair follicles. Changes to your eating habits (rapid weight loss). Stress. Chemical hair treatments. Treatments like chemotherapy or radiation therapy. An underlying health condition like an abnormal thyroid, anemia, vitamin deficiency, etc. Hormonal changes (pregnancy, menopause). Certain medications and supplements (blood pressure medicines, gout medicines and high doses of vitamin A). Genetic predisposition (it runs in your biological family history). […] Your body experiences changes during menopause. This can affect your hair and cause: Hair growing where it didn’t before. The hair you have thinning out. These changes happen due to varying levels of hormones during menopause. In addition, your hair follicles shrink. This makes your hair grow finer (thinner).

• #2 Causes – American Hair Loss Association

  https://www.americanhairloss.org/womens-hair-loss/causes/

  Interestingly, despite the normal or low-normal hormone levels, treatments specifically targeting androgens for Androgenetic Alopecia can still prove effective. […] It is essential to emphasize that early-onset androgenic alopecia in women, also known as female pattern hair loss, has reached epidemic proportions over the past 50 years. […] However, by the late 1990s, early-onset female pattern baldness became a significant issue, with hormonal birth control being widely recognized as the primary drug-induced or exogenous trigger for this silent epidemic, despite not being openly discussed. […] Surveys involving thousands of female patients reveal that 8 out of 10 women under 40 attribute their hair loss to hormonal contraception use or changes. […] If genetic hair loss is present on either side of the family, patients should be informed that both high androgen index as well as low androgen index birth control pills can trigger this condition much earlier in life.

• #2 What causes female hair loss? | UCLA Health

  https://www.uclahealth.org/news/article/what-causes-female-hair-loss

  The most common type of hair loss in women is a condition called female pattern hair loss (FPHL), also known as androgenetic alopecia. It affects up to 30 million women in the U.S. most of them in their 40s, 50s or 60s. […] Just like male pattern baldness, FPHL is an inherited condition. If your mother or father suffered from hair loss, you may inherit the genes that cause it. […] FPHL tends to become more common after menopause. That means there is likely also a hormonal component to the condition. Levels of estrogen drop dramatically around menopause. This may be partly to blame for the hair follicles shrinking. As the hair follicles continue to shrink, new strands eventually stop growing. […] Hormonal shifts may also explain why women who suffer from polycystic ovarian syndrome (PCOS) often experience female pattern hair loss at younger ages. Women with PCOS experience an overproduction of androgens male hormones, such as testosterone. Those hormones can lead to thinning hair.

• #2 Alopecia Areata: Hair Loss Causes, Treatment, and More

  https://www.healthline.com/health/alopecia-areata

  Alopecia areata is an autoimmune condition. This means it develops when your immune system mistakenly attacks healthy cells in your body. […] In alopecia areata, your immune system attacks your hair follicles, the structures from which hairs grow. When the follicles become smaller and stop producing hair, it leads to hair loss. […] Researchers don’t know the exact cause of this condition. However, some factors may increase your chances of developing alopecia areata, including: […] Genetics: If a close family member has alopecia areata, you may be more likely to develop it. […] Certain health conditions: Down syndrome, thyroid disease, and vitiligo are some conditions that can increase the chance of developing alopecia areata. […] Vitamin and mineral deficiencies: Inadequate intake of some nutrients, such as vitamin D and B3, zinc, iron, biotin, and amino acids, may contribute to alopecia areata.

• #2 7 Causes Of Hair Loss You Must Know – Why Hair Fall Happens | RichFeel

  https://www.richfeel.com/hair-fall-cause/

  Diffuse hair loss must be understood as a certain type of hair loss pattern. […] Loss of telogen-phase hairs is the most common in diffuse hair loss type. […] Diffuse hair loss in both males and females can be a direct result of emotional stress, physiological problems, and nutritional deficiencies. […] Malnutrition is among the many common causes of hair loss. […] Various hormonal disturbances can be among the top causes of diffuse hair loss. […] In hypothyroidism, there is less thyroid production due to an underactive thyroid gland which leads to loss of scalp hair and thinning of hair. […] Certain metabolic disorders or loss of electrolytes can also become one of the main causes of hair loss. […] Many therapeutic agents when administered are known to cause hair loss. […] Several autoimmune disorders like SLE, RA, and Psoriasis are main causes of hair loss due to lesions involving the scalp or therapy with cytotoxic drugs.

• #2 Alopecia – StatPearls – NCBI Bookshelf

  https://www.ncbi.nlm.nih.gov/books/NBK538178/

  Alopecia areata is a chronic immune-mediated disease commonly presenting as acute onset patchy hair loss on the scalp, affecting both sexes and children, adolescents, and adults. […] Telogen effluvium is a noninflammatory acute or chronic alopecia usually affecting the entire scalp in both sexes of children, adolescents, and adults. Disruption in the transition from the anagen phase to the telogen phase may be due to psychological stress, chronic illness, pregnancy or postpartum, malnutrition, severe infection, endocrine disorders, metabolic disturbances, surgery, and medications, such as anticonvulsants, antidepressants, anticoagulants, oral contraceptive pills, and retinoids. […] The hair follicles are irreversibly destroyed in scarring alopecia, leading to permanent hair loss. […] Causes of secondary cicatricial alopecia include localized scleroderma, pemphigoid, neoplasm, radiation therapy, chemical or physical trauma, and bacterial or fungal infections. […] The frequency of the types of alopecia in patients consulting at specialist hair clinics and to assess for global variations. […] The prognosis of alopecia also varies according to the clinical subtype and comorbidities of the patient.

• #2 Hair Loss: Common Causes and Treatment | AAFP

  https://www.aafp.org/pubs/afp/issues/2017/0915/p371.html

  A family history of hair loss supports the diagnosis of androgenetic alopecia. […] Alopecia areata is an acute, patchy alopecia that affects up to 2% of the population with no difference between sexes. […] The etiology is unknown, but the pathogenesis is likely autoimmune. […] Telogen effluvium is a nonscarring, noninflammatory alopecia of relatively sudden onset, with similar incidences between sexes and age groups. […] It occurs when large numbers of hairs enter the telogen phase and fall out three to five months after a physiologic or emotional stressor. […] The list of inciting factors is extensive and includes severe chronic illnesses, pregnancy, surgery, high fever, malnutrition, severe infections, and endocrine disorders. […] Anagen effluvium is abnormal diffuse hair loss (usually abrupt) during the anagen phase due to an event that impairs the mitotic or metabolic activity of the hair follicle.

• #2

  https://myhealth.alberta.ca/Health/pages/conditions.aspx?hwid=ug2814

  Medicines and medical treatments can cause hair loss. […] Many medicines that can cause hair loss include: […] Medical treatments that can cause hair loss include: […] Major surgery. Increased hair shedding often occurs within 1 to 3 months after surgery. The condition generally reverses itself within a few months.

• #2 Hair Loss

  https://www.seattlechildrens.org/conditions/a-z/hair-loss/

  Common causes of hair loss are listed below. Most don’t usually require medical treatment. […] This is the main cause of patchy hair loss that needs medical treatment. […] The hair of many newborns falls out during the first few months of life. […] Babies can rub off a patch of hair on the back of the head. This most commonly occurs in infants 3 to 6 months old. It is a result of friction during head-turning against a firm surface. […] If hair is pulled too tight, it will eventually break. […] This is a nervous habit called trichotillomania. Frequent twisting of the hair results in broken hairs of different lengths. […] Hair follicles are very sensitive to physical or emotional stress. The hair begins to fall out about 3-4 months after a severe stress. […] The hair loss is from friction during head-turning against a firm surface.

• #2 Hair loss | Canadian Cancer Society

  https://cancer.ca/en/treatments/side-effects/hair-loss

  Hair loss can occur with some types of cancer treatment. Hair loss is also called alopecia. […] Hair loss occurs because the cells of hair follicles grow quickly, which makes them sensitive to the effects of some cancer treatments. Hair loss can be caused by chemotherapy, radiation therapy, hormonal therapy or targeted therapy. […] Hair loss is a common side effect of chemotherapy. […] Not all chemotherapy drugs cause hair loss. […] Hair loss is a common side effect of radiation therapy to the head. […] Hormonal therapy drugs used to treat breast cancer include tamoxifen (Nolvadex-D, Apo-Tamox) and aromatase inhibitors such as letrozole (Femara), anastrozole (Arimidex) and exemestane (Aromasin). These drugs can cause temporary hair loss. […] Some targeted therapy drugs can cause hair loss and other hair changes. […] The amount of hair lost and whether it will grow back depend on the targeted therapy drug. In most cases, hair loss is temporary, but sometimes it can be permanent.

• #2 Reasons for Hair Loss | THE CENTER for Advanced Dermatology

  https://www.mddermsolutions.com/what-are-some-reasons-for-hair-loss/

  Stress: Experiencing a traumatic event can cause hair loss. […] Protein: When the body does not get enough protein, it rations the protein it does get. One way the body can ration protein is to shut down hair growth. […] Iron: Not getting enough iron can lead to hair loss. Good sources of iron are soybeans, pumpkin seeds, white beans, lentils, spinach, clams, oysters, and organ meats. […] Medications: Some prescription medicines can cause hair loss. These include: Blood thinners, Medicines that treat arthritis, depression, gout, heart problems, and high blood pressure, Birth control pills, Anabolic steroids. […] Hair Care: Your hairstyle and even some of the products you use on your hair can cause hair loss. Frequent bleaching or permanents can cause the hair to break. Regular or improper use of dyes, gels, relaxers, and hair sprays also can cause hair breakage. When used to hold hair tightly, hairpins, clips, and rubber bands can break hair. […] No matter the cause, hair loss can affect the way both men and women look or think about themselves and can have a huge effect on self-confidence.

• #2

  https://www.eastcarolinadermatology.com/common-causes-of-hair-loss

  Loss of a loved one, divorce, financial problems or other stressful life events can disrupt the normal hair growth cycle. Such stress can cause telogen effluvium, the specific type of hair loss often associated with stress. […] Telogen effluvium occurs when there is a shift in the hair growth cycle, causing more hairs to enter the resting phase and fall out prematurely. […] Alopecia areata is an autoimmune disease that causes hair loss on the scalp, face, and other body parts. The immune system attacks the hair follicles, which results in hair falling out in small patches on the scalp. […] Chemotherapy drugs attack rapidly dividing cells to prevent cancer cells from spreading or forming tumors. However, since hair follicles also develop rapidly, chemotherapy often affects them. […] When these healthy cells are damaged, it can lead to hair loss.

• #2 Chapter 4: Other Hair Loss Causes – Laurel Heights San Francisco, CA: Hair Doc

  https://www.hairdoc.com/contents/chapter-4-other-hair-loss-causes

  Nutritional deficiencies are rarely a cause of hair loss despite the marketing of a wide variety of nutritional supplements that claim to somehow enhance hair growth or hair health. Of the possible nutritional deficiencies that can cause thinning hair, iron deficiency anemia is most common, and when it occurs it is more frequently seen in women. […] Certain poisons can cause hair loss when consumed in less than lethal doses. In many cases, hair loss is one of the first signs of poisoning. […] There are many categories of prescription drugs that present a risk of temporary hair loss as a possible side effect. Chemotherapy drug treatment almost always causes hair loss because the drugs target rapidly dividing cells typical of cancer. […] Ionizing radiation such as the type used for cancer treatment, also affects rapidly dividing cells most severely, and, as a result of exposure to radiation, actively producing hair follicles are shut down.

• #2 Uncover Hair Loss Causes & Solutions for Men & Women – Here’s How!

  https://ishrs.org/patients/types-of-hair-loss/

  Hormonal or thyroid disorders may also contribute, as can nutritional deficiencies or certain medications. […] Patients with untreated hyper- or hypothyroidism may present with hair shedding. […] Low levels of iron, zinc, and vitamin D have all been linked with hair shedding in the medical literature. […] High dose vitamin A, isotretinoin, and certain cardiovascular drugs such as beta-blockers (metoprolol, propranolol) and low molecular weight heparin (and less commonly warfarin) have been linked with hair shedding. […] This type of hair loss occurs due to a disruption of the hair growth cycle while it is in its actively growing (anagen) phase. […] Alopecia Areata is an autoimmune form of hair loss that presents with small round-to-oval patches on the scalp but can affect larger, more confluent areas, as well as the eyebrows, eyelashes, and body hair.

• #2 Hair Loss Causes: Reasons It Happens in Women and Men

  https://www.verywellhealth.com/what-causes-hair-loss-8420758

  Menopause, when the menstrual cycle stops, causes changes in estrogen and testosterone hormones involved in regulating the hair cycle. […] Sudden weight loss and very restrictive diets can also cause telogen effluvium. […] Another cause of rapid hair loss in women and men is anagen effluvium from chemotherapy or radiation treatment for cancer or certain medications. […] Affecting men and women, alopecia areata occurs when the immune system mistakenly attacks hair follicles. […] Several other conditions, including the following, can also cause hair loss: ovarian tumors or polycystic ovary syndrome can boost testosterone production in the ovaries, leading to pattern baldness; burns or other skin conditions affecting men and women can cause hair loss; tinea capitis (ringworm) is a fungal infection that causes round, bald patches on the scalp; hypothyroidism is a condition caused by an underactive thyroid and contributes to hair loss; trichotillomania, or hair-pulling disorder, is a compulsive need to pull hair from the scalp, eyebrows, or other body parts.

• #2 Hair loss: Who gets and causes

  https://www.aad.org/public/diseases/hair-loss/causes/18-causes

  If you receive chemotherapy or have radiation treatment to your head or neck, you may lose all (or most of) your hair within a few weeks of starting treatment. […] A few months after giving birth, recovering from an illness, or having an operation, you may notice a lot more hairs in your brush or on your pillow. […] If you color, perm, or relax your hair, you could be damaging your hair. Over time, this damage can lead to hair loss. […] If you often wear your hair tightly pulled back, the continual pulling can lead to permanent hair loss. The medical name for this condition is traction alopecia. […] A common cause of this imbalance is polycystic ovary syndrome (PCOS). It leads to cysts on a womans ovaries, along with other signs and symptoms, which can include hair loss. […] A scalp infection can lead to scaly and sometimes inflamed areas on your scalp.

• #2 Common Causes of Hair Loss: Adrienne O’Connell, DO: Aesthetics

  https://www.lagunabeachaesthetics.com/blog/common-causes-of-hair-loss

  Some hair loss is only temporary, and some may be inevitable. Here are some of the most common reasons your hair may be thinning or falling out. […] If you’re constantly under high stress, you may pay for it in strands of hair. Whether you work under pressure, have a rocky relationship, or lost a loved one, anxiety has physical effects, including hair loss. Physical stress can also lead to hair shedding; pregnancy, illness, and injury can be physically overwhelming and may cause temporary hair loss. […] Certain hairstyles, cornrows, braids, ponytails, updos, and any hairstyle that constantly pulls your tresses back can lead to hair loss. […] Skin conditions that affect your scalp may cause a change in the texture of the skin on your head and cause some bald spots. Hair usually regrows once the infection is resolved.

• #2 Hair loss – Causes, Symptoms, Treatments, Grow new hair | MedPark Hospital

  https://www.medparkhospital.com/en-US/disease-and-treatment/hair-loss

  Hereditary hair loss is the most common cause of hair loss, which usually occurs in a gradual and predictable pattern and is more common in males than females. […] Aging may decrease hormone production with shortened hair’s life cycle, resulting in more hair loss and lowering hair density on the scalp. […] Stress, or exposure to traumatic events with psychological impact, causes the body to produce cortisol, a stress hormone that causes hair loss and thinning. […] Nutritional deficiencies, such as low iron or protein levels. […] Too-tight hairstyles, such as a ponytail or braid, can cause traction alopecia.

• #2 Common causes of paediatric alopecia

  https://www1.racgp.org.au/ajgp/2018/october/common-causes-of-paediatric-alopecia

  Hair loss in children aged 12 years and younger is most often due to a benign or self-limiting condition. […] The most common causes of paediatric alopecia are largely non-scarring. These include tinea capitis, alopecia areata, trauma due to traction alopecia or trichotillomania, and telogen effluvium. […] Hair loss in children aged 12 years and younger encompasses a number of common and rare conditions that may be congenital or acquired. […] The most common causes of paediatric alopecia are tinea capitis, alopecia areata, trauma secondary to traction or trichotillomania, and telogen effluvium. […] The causes of paediatric alopecia include many common and uncommon conditions and syndromes. Alopecia may be due to congenital or acquired conditions. […] Tinea capitis is a common condition to which prepubertal children are predisposed.

• #2 Hair loss: Who gets and causes

  https://www.aad.org/public/diseases/hair-loss/causes/18-causes

  A possible side effect of some medications is hair loss. […] Many people who have plaque psoriasis develop psoriasis on their scalp at some point. This can lead to hair loss. […] Some people pull on their hair, often to relieve stress. […] This condition develops when inflammation destroys hair follicles. Once destroyed, a hair follicle cannot grow hair. […] Left untreated, a sexually transmitted infection (STI) can lead to hair loss. […] If you have a problem with your thyroid, you may see thinning hair. […] If youre not getting enough of one or more of these, you can have noticeable hair loss. […] People can develop hair loss where boots, socks, or tight clothing frequently rubs against their skin. The medical term for this is frictional alopecia. […] Being slowly poisoned can lead to hair loss. Poisons that can cause hair loss include arsenic, thallium, mercury, and lithium. […] While many causes of hair loss can be treated successfully, the key to effective treatment is to find out whats causing the hair loss.

• #2 Alopecia Areata: Causes & Treatment | Doctor

  https://patient.info/doctor/alopecia

  Alopecia describes loss of hair from areas where hair normally grows. It comes in a variety of patterns with a variety of causes. The most common form is male pattern baldness, or androgenetic alopecia. […] There are a number of types and patterns of alopecia. Aetiology, epidemiology and management will vary between them. Some of the more common forms of alopecia (further discussed below) are: Male pattern baldness, or androgenetic alopecia (male). […] This condition is of unknown aetiology, although there is much support for an autoimmune component. It is more common in acquired thyroid disease, vitiligo, diabetes and collagen diseases. […] Determining the cause will guide management and prognosis. […] Genetic predisposition via a number of different genes. […] A number of mechanisms play a part. Hair follicles become smaller over time. Terminal hairs are gradually replaced by thinner hairs with less pigmentation. Hairs are in the anagen phase for less time and fewer hairs are in this growing phase. The end result is shorter hairs which do not reach the skin surface.

• #2 Uncover Hair Loss Causes & Solutions for Men & Women – Here’s How!

  https://ishrs.org/patients/types-of-hair-loss/

  Many people wonder what causes hair loss. The causes of hair loss vary depending on a number of factors, including genetics (this is often what causes baldness or alopecia), illness (such as thyroid disease), and medications you may be taking. […] Factors such as stress, exposure to chemicals or UV rays, smoking and consuming alcohol can play a role in triggering or exacerbating the loss of hair (and can also affect recovery from hair restoration surgery). […] Certain types of hairstyles, including braids, tight ponytails and hair extensions, can cause tension and trauma to the hair follicle, leading to hair loss. […] Miniaturization is the process in which thick, terminal hairs become ever thinner and then are eventually lost, which is the prime mechanism for hair loss in men with male pattern hair loss.

• #2 Hair Loss: Types of Alopecia and Causes of Thinning Hair

  https://www.webmd.com/skin-problems-and-treatments/hair-loss/understanding-hair-loss-basics

  Hair loss can happen to anyone. Your genes, certain medical conditions, treatments for disease, and other factors can contribute to partial or, sometimes, total hair loss not just on your head but on other parts of your body as well. […] Doctors dont know why certain hair follicles are programmed to have a shorter growth period than others. But several factors may influence hair loss, such as: […] Hormonal imbalance, such as abnormal levels of androgens (male hormones normally produced by both men and women), may lead to hair loss. […] Genes from both male and female parents may influence a persons predisposition to male or female pattern baldness. […] Stress, illness, and childbirth can cause temporary hair loss. Ringworm, caused by a fungal infection, can also cause hair loss. […] Drugs, including chemotherapy drugs used in cancer treatment, blood thinners, beta-adrenergic blockers used to control blood pressure, and birth control pills, can cause temporary hair loss. […] Medical conditions. Thyroid disease, lupus, diabetes, iron deficiency anemia, eating disorders, and anemia can cause hair loss. […] Deficiencies in vitamins A, B, C, D, and E, as well as iron and zinc, have been associated with hair loss.

• #2 Types of Disease That Cause Hair Loss Manhattan, NYC – The Hair Loss Doctors

  https://www.hairlossdoctors.com/diseases-and-hair-loss/

  Bald spots, thinning, and breakage can be symptoms of a serious underlying health condition such as alopecia, lupus, thyroid issues, and other common types of disease that cause hair loss. […] Hair loss often occurs in patients suffering or recovering from a medical condition or illness. […] Some of the most common diseases include: Lupus: This long-term autoimmune disease causes a myriad of symptoms that may affect your skin, resulting in hair loss. […] Alopecia Areata: An autoimmune disease that affects the skin and scalp, causing hair to suddenly fall out. […] Thyroid Problems: An overactive or underactive thyroid can both be contributing factors to hair loss. […] Cancer: Cancer such as Hodgkins lymphoma may cause hair loss but typically, chemotherapy is the primary cause. […] Eating Disorders: Eating disorders like anorexia and bulimia not only stress the body but also divert important nutrients away from the cells that help grow healthy hair.

• #2 Why Is My Hair Falling Out? 14 Potential Reasons

  https://www.health.com/why-is-my-hair-falling-out-7496590

  Age-related hair loss is inevitable, but if you catch hair loss as it starts, treatments like minoxidil can help regrow hair. […] Alopecia areata is a condition that causes the immune system to attack healthy hair follicles, leading hair to fall out. […] Stress can cause hair loss, also known as telogen effluvium. If your hair starts falling out months after a stressful situation, it is likely stress that’s to blame. […] Hormonal imbalances related to polycystic ovary syndrome (PCOS) and birth control can lead to hair loss. […] The thyroid gland in your neck makes hormones necessary to regulate breathing, heart rate, mood, and digestion. When the thyroid doesn’t work correctly, it can cause hormonal imbalances that affect the entire body. […] STIs like syphilis can cause you to lose hair in patches on the scalp, eyebrows, and face.

• #3 Causes – American Hair Loss Association

  https://www.americanhairloss.org/mens-hair-loss/causes/

  While the genetic process of male pattern baldness is now better understood, scientists have known for over three decades that DHT plays a key role in shrinking hair follicles through a process known as miniaturization. […] Miniaturization is a biological process driven by hormones that results in the shrinking of hair follicles over time, eventually leading to a bald scalp. […] In hair follicles that are genetically susceptible, the hormone dihydrotestosterone (DHT) can cause the growth phase of the hair cycle to become progressively shorter. […] Over time, these hairs decrease in size, including both diameter and length, until they eventually disappear. […] This process of miniaturization is the primary mechanism underlying androgenetic alopecia, also known as genetic hair loss /Male Pattern Baldness. […] However, with proper intervention, the miniaturization process can be slowed down or even stopped if detected early enough. […] Today, there are interventions available that can help in managing the effects of DHT on hair follicles and potentially prevent further hair loss.

• #3 Causes for Hair Loss | Northwestern Medicine

  https://www.nm.org/healthbeat/healthy-tips/causes-for-hair-loss

  Most people have as many as 100,000 hairs on their head, shedding 50 to 100 hairs daily. […] However, hair loss can occur from a number of other reasons besides aging, including: Changes in hormones, Illness, Family history of baldness, Burns and trauma, Ringworm, Vitamin deficiencies, including vitamins B and D, Iron deficiency (anemia). […] Initial evaluations include some tests to look for underlying triggers, such as thyroid problems or iron deficiency, says Dr. Colavincenzo. These are silent causes of hair loss that will have symptoms like shedding after a shower or styling, and the thinning of hair. […] The most common cause of hair loss is androgenetic alopecia, also referred to as male-pattern baldness. […] This hereditary condition impacts more than 80 million men and women in the United States.

• #3 What causes female hair loss? | UCLA Health

  https://www.uclahealth.org/news/article/what-causes-female-hair-loss

  Men get most of the attention when it comes to hair loss. But its incredibly common in women as well. By age 50, up to 40% of women will have noticeable hair loss, but it can happen at any age. […] Sudden and dramatic hair loss can happen because of taking specific medications (such as those used during chemotherapy). In some cases, rapid hair loss can occur during a period of high stress or trauma to the body. […] That type of hair loss is called telogen effluvium because hair in the anagen (or growing) phase switches to the telogen (resting) phase. Fewer new strands grow and more begin to fall out up to 300 per day. […] Common causes of telogen effluvium include: Childbirth, Severe infection or high fever, Crash diets that are too low in calories and protein, Iron deficiency, Vitamin D deficiency, Psychological stress, depression or anxiety, Thyroid disease.

• #3 Reasons for Hair Loss | THE CENTER for Advanced Dermatology

  https://www.mddermsolutions.com/what-are-some-reasons-for-hair-loss/

  Stress: Experiencing a traumatic event can cause hair loss. […] Protein: When the body does not get enough protein, it rations the protein it does get. One way the body can ration protein is to shut down hair growth. […] Iron: Not getting enough iron can lead to hair loss. Good sources of iron are soybeans, pumpkin seeds, white beans, lentils, spinach, clams, oysters, and organ meats. […] Medications: Some prescription medicines can cause hair loss. These include: Blood thinners, Medicines that treat arthritis, depression, gout, heart problems, and high blood pressure, Birth control pills, Anabolic steroids. […] Hair Care: Your hairstyle and even some of the products you use on your hair can cause hair loss. Frequent bleaching or permanents can cause the hair to break. Regular or improper use of dyes, gels, relaxers, and hair sprays also can cause hair breakage. When used to hold hair tightly, hairpins, clips, and rubber bands can break hair. […] No matter the cause, hair loss can affect the way both men and women look or think about themselves and can have a huge effect on self-confidence.

• #3 Alopecia Areata: Hair Loss Causes, Treatment, and More

  https://www.healthline.com/health/alopecia-areata

  Alopecia areata is an autoimmune condition. This means it develops when your immune system mistakenly attacks healthy cells in your body. […] In alopecia areata, your immune system attacks your hair follicles, the structures from which hairs grow. When the follicles become smaller and stop producing hair, it leads to hair loss. […] Researchers don’t know the exact cause of this condition. However, some factors may increase your chances of developing alopecia areata, including: […] Genetics: If a close family member has alopecia areata, you may be more likely to develop it. […] Certain health conditions: Down syndrome, thyroid disease, and vitiligo are some conditions that can increase the chance of developing alopecia areata. […] Vitamin and mineral deficiencies: Inadequate intake of some nutrients, such as vitamin D and B3, zinc, iron, biotin, and amino acids, may contribute to alopecia areata.

• #3 8 Causes of Hair Loss in Women That Have Nothing to Do With Age | SELF

  https://www.self.com/story/causes-of-hair-loss-in-women

  Stress-induced hair loss is called telogen effluvium and can strike as a result of intense stress, both physical (think: giving birth or having major surgery) and mental or emotional (losing your job or a loved one, for example). You may experience a temporary halt in hair growth as your body puts its resources toward getting you through the underlying stressor. […] Sporting ber-restrictive hairstyles on the regular can trigger traction alopeciahair loss caused by persistent tension or pulling on your hair. Perma-tugging on your hair can lead to damage and inflammation around the follicles, disrupting the normal growth cycle. […] If heat styling or chemical treatments are part of your regular hair-care routine, this puts you at risk of harming your strands and potentially developing a hair shaft disorder called trichorrhexis nodosa—a condition in which damaged, weak points in the hair shaft cause strands to break off easily.

• #3 10 Causes of Hair Loss | LloydsPharmacy Online Doctor UK

  https://onlinedoctor.lloydspharmacy.com/uk/hair-loss-advice/hair-loss-causes

  Fashion and healthy-hair often sit together about as well as oil and water tight braids, man buns, cornrows and harsh treatments can all damage your scalp significantly. And if the roots are damaged, that means hair loss. […] Easily mistaken for dandruff, psoriasis of the scalp causes an overproduction of skin cells visible as large white flakes. This condition can sometimes damage hair follicles and lead to temporary hair loss. […] A harmless skin condition sometimes found on the scalp, indicated by small red patches that are often itchy. This is caused by an inflammatory response in your scalp and can cause hair loss in large patches on the head. […] If you get small patches of hair loss, like circles, that crop up on the scalp, this is known as alopecia areata. Its thought to be an autoimmune condition, this a condition where the body starts to accidentally attack itself, rather than fight off bugs. Cells in the immune system gather at the hair follicles and attack it, causing the hair to fall out.

• #3 Uncover Hair Loss Causes & Solutions for Men & Women – Here’s How!

  https://ishrs.org/patients/types-of-hair-loss/

  Many people wonder what causes hair loss. The causes of hair loss vary depending on a number of factors, including genetics (this is often what causes baldness or alopecia), illness (such as thyroid disease), and medications you may be taking. […] Factors such as stress, exposure to chemicals or UV rays, smoking and consuming alcohol can play a role in triggering or exacerbating the loss of hair (and can also affect recovery from hair restoration surgery). […] Certain types of hairstyles, including braids, tight ponytails and hair extensions, can cause tension and trauma to the hair follicle, leading to hair loss. […] Miniaturization is the process in which thick, terminal hairs become ever thinner and then are eventually lost, which is the prime mechanism for hair loss in men with male pattern hair loss.

• #3 Types of Disease That Cause Hair Loss Manhattan, NYC – The Hair Loss Doctors

  https://www.hairlossdoctors.com/diseases-and-hair-loss/

  Bald spots, thinning, and breakage can be symptoms of a serious underlying health condition such as alopecia, lupus, thyroid issues, and other common types of disease that cause hair loss. […] Hair loss often occurs in patients suffering or recovering from a medical condition or illness. […] Some of the most common diseases include: Lupus: This long-term autoimmune disease causes a myriad of symptoms that may affect your skin, resulting in hair loss. […] Alopecia Areata: An autoimmune disease that affects the skin and scalp, causing hair to suddenly fall out. […] Thyroid Problems: An overactive or underactive thyroid can both be contributing factors to hair loss. […] Cancer: Cancer such as Hodgkins lymphoma may cause hair loss but typically, chemotherapy is the primary cause. […] Eating Disorders: Eating disorders like anorexia and bulimia not only stress the body but also divert important nutrients away from the cells that help grow healthy hair.

• #4 Alopecia Areata: Causes & Treatment | Doctor

  https://patient.info/doctor/alopecia

  Alopecia describes loss of hair from areas where hair normally grows. It comes in a variety of patterns with a variety of causes. The most common form is male pattern baldness, or androgenetic alopecia. […] There are a number of types and patterns of alopecia. Aetiology, epidemiology and management will vary between them. Some of the more common forms of alopecia (further discussed below) are: Male pattern baldness, or androgenetic alopecia (male). […] This condition is of unknown aetiology, although there is much support for an autoimmune component. It is more common in acquired thyroid disease, vitiligo, diabetes and collagen diseases. […] Determining the cause will guide management and prognosis. […] Genetic predisposition via a number of different genes. […] A number of mechanisms play a part. Hair follicles become smaller over time. Terminal hairs are gradually replaced by thinner hairs with less pigmentation. Hairs are in the anagen phase for less time and fewer hairs are in this growing phase. The end result is shorter hairs which do not reach the skin surface.

• #4 Alopecia (Hair Loss) – Skin Disorders – Merck Manual Consumer Version

  https://www.merckmanuals.com/home/skin-disorders/hair-disorders/alopecia-hair-loss

  Hair loss, also called alopecia, can occur on any part of the body. Hair loss that occurs on the scalp is generally called baldness. Hair loss is often of great concern to people for cosmetic reasons, but it can also be a sign of a bodywide (systemic) disorder. […] The most common cause of hair loss is male-pattern and female-pattern baldness (androgenetic alopecia). […] Other common causes of hair loss are alopecia areata, certain systemic disorders, such as cutaneous lupus erythematosus and hormonal disorders, medications, particularly chemotherapy, fungal infections, such as ringworm of the scalp (tinea capitis), physical stresses such as a high fever, surgery, a major illness, sudden weight loss, or pregnancy (all of which can lead to a telogen effluvium), psychological stresses, and injury (trauma).

• #4 Reasons for Hair Loss | THE CENTER for Advanced Dermatology

  https://www.mddermsolutions.com/what-are-some-reasons-for-hair-loss/

  Stress: Experiencing a traumatic event can cause hair loss. […] Protein: When the body does not get enough protein, it rations the protein it does get. One way the body can ration protein is to shut down hair growth. […] Iron: Not getting enough iron can lead to hair loss. Good sources of iron are soybeans, pumpkin seeds, white beans, lentils, spinach, clams, oysters, and organ meats. […] Medications: Some prescription medicines can cause hair loss. These include: Blood thinners, Medicines that treat arthritis, depression, gout, heart problems, and high blood pressure, Birth control pills, Anabolic steroids. […] Hair Care: Your hairstyle and even some of the products you use on your hair can cause hair loss. Frequent bleaching or permanents can cause the hair to break. Regular or improper use of dyes, gels, relaxers, and hair sprays also can cause hair breakage. When used to hold hair tightly, hairpins, clips, and rubber bands can break hair. […] No matter the cause, hair loss can affect the way both men and women look or think about themselves and can have a huge effect on self-confidence.

• #4 Hair loss: Who gets and causes

  https://www.aad.org/public/diseases/hair-loss/causes/18-causes

  A possible side effect of some medications is hair loss. […] Many people who have plaque psoriasis develop psoriasis on their scalp at some point. This can lead to hair loss. […] Some people pull on their hair, often to relieve stress. […] This condition develops when inflammation destroys hair follicles. Once destroyed, a hair follicle cannot grow hair. […] Left untreated, a sexually transmitted infection (STI) can lead to hair loss. […] If you have a problem with your thyroid, you may see thinning hair. […] If youre not getting enough of one or more of these, you can have noticeable hair loss. […] People can develop hair loss where boots, socks, or tight clothing frequently rubs against their skin. The medical term for this is frictional alopecia. […] Being slowly poisoned can lead to hair loss. Poisons that can cause hair loss include arsenic, thallium, mercury, and lithium. […] While many causes of hair loss can be treated successfully, the key to effective treatment is to find out whats causing the hair loss.

• #5 Alopecia (Hair Loss) – Skin Disorders – Merck Manual Consumer Version

  https://www.merckmanuals.com/home/skin-disorders/hair-disorders/alopecia-hair-loss

  Hair loss, also called alopecia, can occur on any part of the body. Hair loss that occurs on the scalp is generally called baldness. Hair loss is often of great concern to people for cosmetic reasons, but it can also be a sign of a bodywide (systemic) disorder. […] The most common cause of hair loss is male-pattern and female-pattern baldness (androgenetic alopecia). […] Other common causes of hair loss are alopecia areata, certain systemic disorders, such as cutaneous lupus erythematosus and hormonal disorders, medications, particularly chemotherapy, fungal infections, such as ringworm of the scalp (tinea capitis), physical stresses such as a high fever, surgery, a major illness, sudden weight loss, or pregnancy (all of which can lead to a telogen effluvium), psychological stresses, and injury (trauma).

• #5 Uncover Hair Loss Causes & Solutions for Men & Women – Here’s How!

  https://ishrs.org/patients/types-of-hair-loss/

  Hormonal or thyroid disorders may also contribute, as can nutritional deficiencies or certain medications. […] Patients with untreated hyper- or hypothyroidism may present with hair shedding. […] Low levels of iron, zinc, and vitamin D have all been linked with hair shedding in the medical literature. […] High dose vitamin A, isotretinoin, and certain cardiovascular drugs such as beta-blockers (metoprolol, propranolol) and low molecular weight heparin (and less commonly warfarin) have been linked with hair shedding. […] This type of hair loss occurs due to a disruption of the hair growth cycle while it is in its actively growing (anagen) phase. […] Alopecia Areata is an autoimmune form of hair loss that presents with small round-to-oval patches on the scalp but can affect larger, more confluent areas, as well as the eyebrows, eyelashes, and body hair.

• #6 Alopecia (Hair Loss) – Skin Disorders – Merck Manual Consumer Version

  https://www.merckmanuals.com/home/skin-disorders/hair-disorders/alopecia-hair-loss

  Hair loss, also called alopecia, can occur on any part of the body. Hair loss that occurs on the scalp is generally called baldness. Hair loss is often of great concern to people for cosmetic reasons, but it can also be a sign of a bodywide (systemic) disorder. […] The most common cause of hair loss is male-pattern and female-pattern baldness (androgenetic alopecia). […] Other common causes of hair loss are alopecia areata, certain systemic disorders, such as cutaneous lupus erythematosus and hormonal disorders, medications, particularly chemotherapy, fungal infections, such as ringworm of the scalp (tinea capitis), physical stresses such as a high fever, surgery, a major illness, sudden weight loss, or pregnancy (all of which can lead to a telogen effluvium), psychological stresses, and injury (trauma).

• #6 Uncover Hair Loss Causes & Solutions for Men & Women – Here’s How!

  https://ishrs.org/patients/types-of-hair-loss/

  Hormonal or thyroid disorders may also contribute, as can nutritional deficiencies or certain medications. […] Patients with untreated hyper- or hypothyroidism may present with hair shedding. […] Low levels of iron, zinc, and vitamin D have all been linked with hair shedding in the medical literature. […] High dose vitamin A, isotretinoin, and certain cardiovascular drugs such as beta-blockers (metoprolol, propranolol) and low molecular weight heparin (and less commonly warfarin) have been linked with hair shedding. […] This type of hair loss occurs due to a disruption of the hair growth cycle while it is in its actively growing (anagen) phase. […] Alopecia Areata is an autoimmune form of hair loss that presents with small round-to-oval patches on the scalp but can affect larger, more confluent areas, as well as the eyebrows, eyelashes, and body hair.

• #7 10 Causes of Hair Loss | LloydsPharmacy Online Doctor UK

  https://onlinedoctor.lloydspharmacy.com/uk/hair-loss-advice/hair-loss-causes

  Hormonal changes can sometimes also contribute to hair loss. Pregnancy and childbirth for example can cause temporary hair loss, as can the menopause. […] Some women might experience hair loss after pregnancy due to a process called telogen effluvium. This is when the normal life cycle of the hair is interrupted due to a major stressful event like childbirth. The hair comes to the end of its cycle much sooner than normal and so begins to shed up to three months after the event.

• #7 Reasons for Hair Loss | THE CENTER for Advanced Dermatology

  https://www.mddermsolutions.com/what-are-some-reasons-for-hair-loss/

  Stress: Experiencing a traumatic event can cause hair loss. […] Protein: When the body does not get enough protein, it rations the protein it does get. One way the body can ration protein is to shut down hair growth. […] Iron: Not getting enough iron can lead to hair loss. Good sources of iron are soybeans, pumpkin seeds, white beans, lentils, spinach, clams, oysters, and organ meats. […] Medications: Some prescription medicines can cause hair loss. These include: Blood thinners, Medicines that treat arthritis, depression, gout, heart problems, and high blood pressure, Birth control pills, Anabolic steroids. […] Hair Care: Your hairstyle and even some of the products you use on your hair can cause hair loss. Frequent bleaching or permanents can cause the hair to break. Regular or improper use of dyes, gels, relaxers, and hair sprays also can cause hair breakage. When used to hold hair tightly, hairpins, clips, and rubber bands can break hair. […] No matter the cause, hair loss can affect the way both men and women look or think about themselves and can have a huge effect on self-confidence.

Zobacz więcej