Materiały źródłowe

• #1 Snake Bite: Symptoms, Causes, Treatment, and More

  https://www.health.com/snake-bite-8675316

  Symptoms of snake bites can vary, depending on the type of snake that bit you, where the bite occurred on the body, the size of the snake, the amount of venom injected, and whether the bite was venomous or non-venomous. Symptoms can also vary depending on factors such as age, height, and health. […] Common symptoms of a snake bite include: Severe pain, tenderness, and swelling […] Bleeding and fang marks on the skin […] Seizures […] Numbness and tingling […] Blurry vision […] A taste of metal, mint, or rubber in the mouth […] Muscle weakness or twitching […] Increased sweating or salivation […] Nausea and vomiting […] Diarrhea […] Rapid heart rate […] Difficulty breathing. […] Snake bites are serious or life-threatening injuries to the skin that can occur when you get bit by a venomous or non-venomous snake. Symptoms can sometimes take hours to appear, but it’s important to seek medical care immediately if you’ve been bitten. […] The sooner you get treatment for venomous snake bites, the lower your risk of experiencing complications. If you get bit, it’s essential to perform first aid on the bite and then request medical help by calling 911 or going to the nearest emergency room.

• #2 Clinical Features And Management Of Snake Bite

  https://pmc.ncbi.nlm.nih.gov/articles/PMC4925324/

  Snake venom may contain twenty or more toxins. Most of them are enzymes, non-enzyme peptide toxins and non-toxic proteins. The cobra and krait venoms are neurotoxic and cardiotoxic. Local effects are seen in the former but not in the latter. Viper venom is vasculotoxic and has severe necrotizing local effects. The neurotoxins of elapids and sea snakes are absorbed rapidly into the blood stream (therefore causing rapid systemic effects), whereas the much larger molecules of viper venom are taken up more slowly through the lymphatics (therefore causing severe local effects). Most venoms do not cross blood brain barrier. […] In at least 20% of pit viper bites and a greater percentage of elapid and sea snake bites, no venom is injected. […] Fang marks: Generally, the presence of two puncture wounds indicates a bite by a poisonous snake. In the case of a non-venomous snakebite, small puncture wounds are seen arranged in an arc.

• #3 How Long Does It Take for Snake Bite Symptoms to Show?

  https://www.awayclinic.com/post/how-long-does-it-take-for-snake-bite-symptoms-to-show

  Snake bites are a serious concern for international travelers venturing into wilderness areas. One of the most critical questions that arise when discussing snake bites is: how long does it take for snake bite symptoms to show? […] The severity and speed at which symptoms appear largely depend on the type of snake venom injected. […] When it comes to understanding how long does it take for snake bite symptoms to show, it’s important to note that the onset can range from almost immediate to several hours after the bite occurs. […] In many cases, symptoms begin to manifest within 30 minutes to two hours. However, some bites may not show symptoms for up to 24 hours. […] The progression of symptoms typically follows this pattern: Immediate pain and swelling at the bite site (0-5 minutes), Gradual spread of swelling and discoloration (5-30 minutes), Nausea, vomiting, and dizziness (30 minutes – 2 hours), Difficulty breathing or swallowing (1-4 hours), Severe pain and tissue damage in the affected area (2-6 hours).

• #4 Snake Bites: Types, Symptoms, and Treatments

  https://www.healthline.com/health/snake-bites

  About 7,000 venomous snake bite cases are reported every year in the United States. A bite from a venomous snake is rarely deadly about 6 fatalities are reported every year but it should always be treated as a medical emergency. […] Venomous snake bites can produce an array of symptoms, including localized pain and swelling, convulsions, nausea, and even paralysis. […] To identify a snake bite, consider the following general symptoms: two puncture wounds, swelling and redness around the wounds, pain at the bite site, difficulty breathing, vomiting and nausea, blurred vision, sweating and salivating, numbness in the face and limbs. […] Symptoms specific to rattlesnake bites are immediate and include: severe pain, drooping eyelids, low blood pressure, thirst, tiredness or muscle weakness.

• #5 Snake bites: MedlinePlus Medical EncyclopediaLock

  https://medlineplus.gov/ency/article/000031.htm

  Snake bites occur when a snake bites the skin. They are medical emergencies if the snake is venomous. […] Symptoms depend on the type of snake, but may include: […] Rattlesnake bites are painful when they occur. Symptoms usually begin right away and may include: […] Cottonmouth and copperhead bites are painful right when they occur. Symptoms, which usually begin right away, may include: […] Coral snake bites may be painless at first. Major symptoms may not develop for hours.

• #6

  https://www.advocarearoestyent.com/are-you-sick/Snake-Bite

  Bites from poisonous snakes are more serious. These bites will have tiny puncture wounds at the bite site. A person bitten by a poisonous snake should get medical attention right away. […] The poison from Pit Vipers first causes pain and swelling at the bite. It later causes weakness, nausea, and sweating. […] Local symptoms: if poison was injected, the bite will burn and hurt within 5 minutes. It will begin to swell within 30 minutes. An exception is the Coral Snake. Coral snakebites will have little pain or swelling. These bites will still cause severe weakness or paralysis. […] Systemic symptoms: nausea, sweating, and weakness may take a few hours to develop. The severity of symptoms depends on a number of factors. These include the amount and toxicity of poison injected and location of the bite. The size and species of the snake, and the size and age of the victim are also factors.

• #7 Clinical Features And Management Of Snake Bite

  https://pmc.ncbi.nlm.nih.gov/articles/PMC4925324/

  Pain: Burning, bursting or throbbing pain may develop immediately after the bite and spread proximally up the bitten limb. Draining lymph nodes soon become painful. Krait and sea snake bites maybe virtually painless. […] Local swelling: Viper bites produce more intense local reaction than other snakes. Swelling may become apparent within 15 minutes and becomes massive in 2-3 days. It may persist for up to 3 weeks. The swelling spreads rapidly from the site of the bite and may involve the whole limb and adjacent trunk. Regional lymphadenopathy may develop. In case the envenomed tissue is contained in a tight fascial compartment like the pulp space of digits or anterior tibial compartment, ischaemia will develop. If there is no swelling 2 hours after a viper bite, it is safe to assume that there has been no envenoming.

• #8 Clinical Features And Management Of Snake Bite

  https://pmc.ncbi.nlm.nih.gov/articles/PMC4925324/

  Pain: Burning, bursting or throbbing pain may develop immediately after the bite and spread proximally up the bitten limb. Draining lymph nodes soon become painful. Krait and sea snake bites maybe virtually painless. […] Local swelling: Viper bites produce more intense local reaction than other snakes. Swelling may become apparent within 15 minutes and becomes massive in 2-3 days. It may persist for up to 3 weeks. The swelling spreads rapidly from the site of the bite and may involve the whole limb and adjacent trunk. Regional lymphadenopathy may develop. In case the envenomed tissue is contained in a tight fascial compartment like the pulp space of digits or anterior tibial compartment, ischaemia will develop. If there is no swelling 2 hours after a viper bite, it is safe to assume that there has been no envenoming.

• #9 Snakebites: First aid

  https://www.mayoclinic.org/first-aid/first-aid-snake-bites/basics/art-20056681

  Most snakebites happen on the arms, wrists or hands. Typical symptoms of a nonvenomous snakebite are pain, injury and scratches at the site of the bite. […] After a venomous snakebite, there usually is serious pain and tenderness at the site. This can worsen to swelling and bruising at the site and all the way up the arm or leg. Other symptoms are nausea, labored breathing and feelings of weakness, as well as an odd taste in the mouth. […] Some snakes, such as coral snakes, have toxins that affect the brain and nerves. This can cause symptoms such as upper eyelid drooping, tingling fingers or toes, difficulty swallowing, and muscle weakness.

• #10 Snakebites – Injuries and Poisoning – Merck Manual Consumer Version

  https://www.merckmanuals.com/home/injuries-and-poisoning/bites-and-stings/snakebites

  The symptoms of snake venom poisoning vary widely, depending on the following: […] Bites by most pit vipers rapidly cause pain. Not all bites inject venom, but if the wound oozes, venom was probably injected. Redness and swelling usually follow within 30 to 60 minutes and can affect the entire leg or arm within several hours. Moderate or severe pit viper poisoning commonly causes bruising of the skin 3 to 6 hours after the bite. The skin around the bite appears tight and discolored. Blisters, often filled with blood, may form in the bite area. Without treatment, tissue around the bite may be destroyed. […] Other symptoms include fever, chills, general weakness, faintness, sweating, anxiety, confusion, nausea, vomiting, and diarrhea. Some of these symptoms may be caused by terror rather than venom. The gums may bleed, and blood may appear in the persons vomit, stools, and urine. Breathing difficulties can occur, particularly after Mojave rattlesnake bites. Some people may have chest pain. Hours later, people may have a headache, blurred vision, drooping eyelids, and a dry mouth.

• #11 Snakebites: What To Do If You Are Bitten

  https://www.webmd.com/first-aid/snakebite

  Bites by venomous snakes result in a wide range of effects, from simple puncture wounds to life-threatening illness and death. The early effects of a venomous snakebite can be misleading. A victim can have no significant symptoms at first, and then suddenly have a hard time breathing and go into shock. […] Signs and symptoms of snake poisoning can be broken into a few major categories: Local effects: Bites by vipers and some cobras are painful and tender. They can be severely swollen and can bleed and blister. Some cobra venoms can also kill the tissue around the site of the bite. […] Bleeding: Bites by vipers and some Australian elapids can cause bleeding of internal organs such as the brain or bowels. A victim may bleed from the bite site or bleed spontaneously from the mouth or old wounds. Unchecked bleeding can cause shock or even death.

• #12 Snakebites – Injuries and Poisoning – Merck Manual Consumer Version

  https://www.merckmanuals.com/home/injuries-and-poisoning/bites-and-stings/snakebites

  Coral snakebites usually cause little or no immediate pain and swelling. More severe symptoms may take several hours to develop. The area around the bite may tingle, and nearby muscles may become weak. Muscle incoordination and severe general weakness may follow. Other symptoms may include double vision, blurred vision, confusion, drowsiness, increased saliva production, and speech and swallowing difficulties. Breathing problems, which may be extreme, may develop.

• #13 Snakebites: What You Need to Know

  https://www.webmd.com/first-aid/ss/slideshow-snakebite-treatment

  Pit Viper Bite Symptoms […] These depend on your age and body size, as well as the type of snake, where you got bit, how many bites there were, and how much venom went in. Signs of pit viper bites include: […] Fang puncture marks — typically two very clear marks, maybe along with scratches or marks from smaller teeth […] Bruising […] Serious pain […] Oozing from the bite mark […] Swelling within 5 minutes […] Throwing up […] Weakness […] […] […] Coral Snake Bite Symptoms […] These bites may not leave much of a mark or cause any swelling, and you may not feel any pain. You might not have any symptoms for many hours. When they do show up, they can include: […] Anxiety […] Blurred or double vision […] General feeling of sickness […] A lot more saliva than usual […] Nausea, throwing up, and stomach pain […] Sleepiness […] Slurred speech […] Sweating

• #14 How Long Does It Take for Snake Bite Symptoms to Show?

  https://www.awayclinic.com/post/how-long-does-it-take-for-snake-bite-symptoms-to-show

  Snake bites are a serious concern for international travelers venturing into wilderness areas. One of the most critical questions that arise when discussing snake bites is: how long does it take for snake bite symptoms to show? […] The severity and speed at which symptoms appear largely depend on the type of snake venom injected. […] When it comes to understanding how long does it take for snake bite symptoms to show, it’s important to note that the onset can range from almost immediate to several hours after the bite occurs. […] In many cases, symptoms begin to manifest within 30 minutes to two hours. However, some bites may not show symptoms for up to 24 hours. […] The progression of symptoms typically follows this pattern: Immediate pain and swelling at the bite site (0-5 minutes), Gradual spread of swelling and discoloration (5-30 minutes), Nausea, vomiting, and dizziness (30 minutes – 2 hours), Difficulty breathing or swallowing (1-4 hours), Severe pain and tissue damage in the affected area (2-6 hours).

• #15 Snakebites – Injuries and Poisoning – Merck Manual Consumer Version

  https://www.merckmanuals.com/home/injuries-and-poisoning/bites-and-stings/snakebites

  The symptoms of snake venom poisoning vary widely, depending on the following: […] Bites by most pit vipers rapidly cause pain. Not all bites inject venom, but if the wound oozes, venom was probably injected. Redness and swelling usually follow within 30 to 60 minutes and can affect the entire leg or arm within several hours. Moderate or severe pit viper poisoning commonly causes bruising of the skin 3 to 6 hours after the bite. The skin around the bite appears tight and discolored. Blisters, often filled with blood, may form in the bite area. Without treatment, tissue around the bite may be destroyed. […] Other symptoms include fever, chills, general weakness, faintness, sweating, anxiety, confusion, nausea, vomiting, and diarrhea. Some of these symptoms may be caused by terror rather than venom. The gums may bleed, and blood may appear in the persons vomit, stools, and urine. Breathing difficulties can occur, particularly after Mojave rattlesnake bites. Some people may have chest pain. Hours later, people may have a headache, blurred vision, drooping eyelids, and a dry mouth.

• #16 Snakebites – Injuries and Poisoning – Merck Manual Consumer Version

  https://www.merckmanuals.com/home/injuries-and-poisoning/bites-and-stings/snakebites

  The symptoms of snake venom poisoning vary widely, depending on the following: […] Bites by most pit vipers rapidly cause pain. Not all bites inject venom, but if the wound oozes, venom was probably injected. Redness and swelling usually follow within 30 to 60 minutes and can affect the entire leg or arm within several hours. Moderate or severe pit viper poisoning commonly causes bruising of the skin 3 to 6 hours after the bite. The skin around the bite appears tight and discolored. Blisters, often filled with blood, may form in the bite area. Without treatment, tissue around the bite may be destroyed. […] Other symptoms include fever, chills, general weakness, faintness, sweating, anxiety, confusion, nausea, vomiting, and diarrhea. Some of these symptoms may be caused by terror rather than venom. The gums may bleed, and blood may appear in the persons vomit, stools, and urine. Breathing difficulties can occur, particularly after Mojave rattlesnake bites. Some people may have chest pain. Hours later, people may have a headache, blurred vision, drooping eyelids, and a dry mouth.

• #17 Clinical Features And Management Of Snake Bite

  https://pmc.ncbi.nlm.nih.gov/articles/PMC4925324/

  Local necrosis: In viper bites, bruising, blistering and necrosis may appear over few days following the bite. Necrosis is marked following bites of Asian pit vipers, and some rattlesnakes. Bites by Asian cobras can also cause tender local swelling and blistering. Krait bites usually do not cause any local reaction. Patients spat at by spitting elapids may develop venom ophthalmia. […] Even in patients with dry bites, symptoms like flushing, breathlessness, palpitations, and dizziness, tightness in the chest, sweating and acroparaesthesiae are common. These are due to anxiety and sympathetic overactivity. Apart from these, early symptoms in elapid bites include vomiting, heaviness of eyelids, blurring of vision, hypersalivation, congested conjunctivae and gooseflesh. In krait bites, cramping abdominal pain followed by diarrhoea and collapse may occur. Sea snake envenomation causes headache, a thick feeling of the tongue, thirst, sweating and vomiting. It is important to remember that nausea and vomiting are common symptoms of all severe envenomation.

• #18 Clinical Features And Management Of Snake Bite

  https://pmc.ncbi.nlm.nih.gov/articles/PMC4925324/

  Pain: Burning, bursting or throbbing pain may develop immediately after the bite and spread proximally up the bitten limb. Draining lymph nodes soon become painful. Krait and sea snake bites maybe virtually painless. […] Local swelling: Viper bites produce more intense local reaction than other snakes. Swelling may become apparent within 15 minutes and becomes massive in 2-3 days. It may persist for up to 3 weeks. The swelling spreads rapidly from the site of the bite and may involve the whole limb and adjacent trunk. Regional lymphadenopathy may develop. In case the envenomed tissue is contained in a tight fascial compartment like the pulp space of digits or anterior tibial compartment, ischaemia will develop. If there is no swelling 2 hours after a viper bite, it is safe to assume that there has been no envenoming.

• #19 Clinical Features And Management Of Snake Bite

  https://pmc.ncbi.nlm.nih.gov/articles/PMC4925324/

  Pain: Burning, bursting or throbbing pain may develop immediately after the bite and spread proximally up the bitten limb. Draining lymph nodes soon become painful. Krait and sea snake bites maybe virtually painless. […] Local swelling: Viper bites produce more intense local reaction than other snakes. Swelling may become apparent within 15 minutes and becomes massive in 2-3 days. It may persist for up to 3 weeks. The swelling spreads rapidly from the site of the bite and may involve the whole limb and adjacent trunk. Regional lymphadenopathy may develop. In case the envenomed tissue is contained in a tight fascial compartment like the pulp space of digits or anterior tibial compartment, ischaemia will develop. If there is no swelling 2 hours after a viper bite, it is safe to assume that there has been no envenoming.

• #20 Snake bite warning signs and first aid | VCU Healthic_closeGroup

  https://www.vcuhealth.org/news/snake-bite-warning-signs-and-first-aid/

  Snake bite warning signs and first aid […] About five individuals die from venomous snake bites each year in the United States, but health experts say that number would be much higher if people did not seek medical care. […] Symptoms may vary depending on the snake, but someone who has been bitten by a venomous snake may have puncture marks at the wound, as well as redness, bruising or swelling around the bite. They may also experience: Rapid heart rate, weak pulse or low blood pressure, Nausea and vomiting, Labored breathing, Disturbed vision, Numbness or tingling around the face/limbs, Metallic, mint or rubber taste in the mouth. […] If you or someone you’re with are bitten by a venomous snake, you should get to an emergency room as soon as possible. While it might be difficult, stay calm and take note of the snake’s color, shape and any markings you see. Also, make a mark on the leading edge of tenderness/swelling on the skin and write the time alongside it. This is all helpful information for first responders and providers when it comes to identifying the type of snake and the best treatment options.

• #21 How Long Does It Take for Snake Bite Symptoms to Show?

  https://www.awayclinic.com/post/how-long-does-it-take-for-snake-bite-symptoms-to-show

  Snake bites are a serious concern for international travelers venturing into wilderness areas. One of the most critical questions that arise when discussing snake bites is: how long does it take for snake bite symptoms to show? […] The severity and speed at which symptoms appear largely depend on the type of snake venom injected. […] When it comes to understanding how long does it take for snake bite symptoms to show, it’s important to note that the onset can range from almost immediate to several hours after the bite occurs. […] In many cases, symptoms begin to manifest within 30 minutes to two hours. However, some bites may not show symptoms for up to 24 hours. […] The progression of symptoms typically follows this pattern: Immediate pain and swelling at the bite site (0-5 minutes), Gradual spread of swelling and discoloration (5-30 minutes), Nausea, vomiting, and dizziness (30 minutes – 2 hours), Difficulty breathing or swallowing (1-4 hours), Severe pain and tissue damage in the affected area (2-6 hours).

• #22 Clinical Features And Management Of Snake Bite

  https://pmc.ncbi.nlm.nih.gov/articles/PMC4925324/

  Local necrosis: In viper bites, bruising, blistering and necrosis may appear over few days following the bite. Necrosis is marked following bites of Asian pit vipers, and some rattlesnakes. Bites by Asian cobras can also cause tender local swelling and blistering. Krait bites usually do not cause any local reaction. Patients spat at by spitting elapids may develop venom ophthalmia. […] Even in patients with dry bites, symptoms like flushing, breathlessness, palpitations, and dizziness, tightness in the chest, sweating and acroparaesthesiae are common. These are due to anxiety and sympathetic overactivity. Apart from these, early symptoms in elapid bites include vomiting, heaviness of eyelids, blurring of vision, hypersalivation, congested conjunctivae and gooseflesh. In krait bites, cramping abdominal pain followed by diarrhoea and collapse may occur. Sea snake envenomation causes headache, a thick feeling of the tongue, thirst, sweating and vomiting. It is important to remember that nausea and vomiting are common symptoms of all severe envenomation.

• #23 Snake Bites: Types, Symptoms, and Treatments

  https://www.healthline.com/health/snake-bites

  About 7,000 venomous snake bite cases are reported every year in the United States. A bite from a venomous snake is rarely deadly about 6 fatalities are reported every year but it should always be treated as a medical emergency. […] Venomous snake bites can produce an array of symptoms, including localized pain and swelling, convulsions, nausea, and even paralysis. […] To identify a snake bite, consider the following general symptoms: two puncture wounds, swelling and redness around the wounds, pain at the bite site, difficulty breathing, vomiting and nausea, blurred vision, sweating and salivating, numbness in the face and limbs. […] Symptoms specific to rattlesnake bites are immediate and include: severe pain, drooping eyelids, low blood pressure, thirst, tiredness or muscle weakness.

• #24 Snakebite: Symptoms of a Pit Viper Bite Information

  https://www.columbiadoctors.org/health-library/article/snakebite-symptoms-pit-viper-bite/

  Pit vipers, such as the rattlesnake, copperhead, and cottonmouth (also called water moccasin), are poisonous (venomous) snakes. They leave one, two, or three puncture marks on the skin, but you won’t always see any marks. […] Symptoms of a pit viper snakebite usually appear within a few minutes to a few hours after a bite and may include: Severe, immediate pain with rapid swelling. Bruising of the skin. Trouble breathing. Changes in heart rate or rhythm. A metallic, rubbery, or minty taste in the mouth. Numbness or tingling around the mouth, tongue, scalp, feet, or the bite area. Swelling in lymph nodes near the bite. Signs of shock. […] The severity of symptoms will depend on the type of snake that bit you, how much venom was injected with the bite (envenomation), and your personal health risks. Even if you do not have symptoms within 8 hours of a bite, continue to watch for symptoms for up to 2 weeks.

• #25 Snake Bites: Types, Symptoms, and Treatments

  https://www.healthline.com/health/snake-bites

  About 7,000 venomous snake bite cases are reported every year in the United States. A bite from a venomous snake is rarely deadly about 6 fatalities are reported every year but it should always be treated as a medical emergency. […] Venomous snake bites can produce an array of symptoms, including localized pain and swelling, convulsions, nausea, and even paralysis. […] To identify a snake bite, consider the following general symptoms: two puncture wounds, swelling and redness around the wounds, pain at the bite site, difficulty breathing, vomiting and nausea, blurred vision, sweating and salivating, numbness in the face and limbs. […] Symptoms specific to rattlesnake bites are immediate and include: severe pain, drooping eyelids, low blood pressure, thirst, tiredness or muscle weakness.

• #26 Clinical Features And Management Of Snake Bite

  https://pmc.ncbi.nlm.nih.gov/articles/PMC4925324/

  Pain: Burning, bursting or throbbing pain may develop immediately after the bite and spread proximally up the bitten limb. Draining lymph nodes soon become painful. Krait and sea snake bites maybe virtually painless. […] Local swelling: Viper bites produce more intense local reaction than other snakes. Swelling may become apparent within 15 minutes and becomes massive in 2-3 days. It may persist for up to 3 weeks. The swelling spreads rapidly from the site of the bite and may involve the whole limb and adjacent trunk. Regional lymphadenopathy may develop. In case the envenomed tissue is contained in a tight fascial compartment like the pulp space of digits or anterior tibial compartment, ischaemia will develop. If there is no swelling 2 hours after a viper bite, it is safe to assume that there has been no envenoming.

• #27 logo-paypal

  https://envirobug.com.au/blogs/envirobug-blog/signs-and-symptoms-of-snake-bites?srsltid=AfmBOooU9gz7dRieDSh7gSlDcAPVGT961fK_FDV4MkcpmNuU80w7ifxr

  The usual snake bite development is: 1 Hour: A headache (an important symptom), irritability, photophobia, nausea, vomiting, diarrhoea, confusion; coagulation abnormalities; occasionally sudden hypotension with loss of consciousness. […] 1-3 Hours: Cranial nerve paralysis (ptosis, diplopia, dysphagia etc), abdominal pain, haemoglobinuria, hypertension, tachycardia, haemorrhage. […] 3 Hours: The leg, arm or affected area and lungs may experience paralysis leading to respiratory failure or difficulty in breathing. Blood flow on the upper and lower parts of the body and the surface of the skin may be restricted. A process called rhabdomyolysis is triggered, in which muscle tissue is broken down leading to the release of the constituents of muscle fibre in the body. A protein found in muscle cells that works as an oxygen supply unit to your muscles is released in urine. This condition can cause acute kidney injury and in a worse cases, acute kidney failure and death. […] This sequence of events is, of course, variable. For example, brown snake bite mark have been known to lead to dead within 5 minutes. Snake bites can be dangerous and deadly and you need to seek medical attention immediately.

• #28 Clinical Features And Management Of Snake Bite

  https://pmc.ncbi.nlm.nih.gov/articles/PMC4925324/

  Local necrosis: In viper bites, bruising, blistering and necrosis may appear over few days following the bite. Necrosis is marked following bites of Asian pit vipers, and some rattlesnakes. Bites by Asian cobras can also cause tender local swelling and blistering. Krait bites usually do not cause any local reaction. Patients spat at by spitting elapids may develop venom ophthalmia. […] Even in patients with dry bites, symptoms like flushing, breathlessness, palpitations, and dizziness, tightness in the chest, sweating and acroparaesthesiae are common. These are due to anxiety and sympathetic overactivity. Apart from these, early symptoms in elapid bites include vomiting, heaviness of eyelids, blurring of vision, hypersalivation, congested conjunctivae and gooseflesh. In krait bites, cramping abdominal pain followed by diarrhoea and collapse may occur. Sea snake envenomation causes headache, a thick feeling of the tongue, thirst, sweating and vomiting. It is important to remember that nausea and vomiting are common symptoms of all severe envenomation.

• #29 Snakebites – Injuries and Poisoning – Merck Manual Consumer Version

  https://www.merckmanuals.com/home/injuries-and-poisoning/bites-and-stings/snakebites

  The symptoms of snake venom poisoning vary widely, depending on the following: […] Bites by most pit vipers rapidly cause pain. Not all bites inject venom, but if the wound oozes, venom was probably injected. Redness and swelling usually follow within 30 to 60 minutes and can affect the entire leg or arm within several hours. Moderate or severe pit viper poisoning commonly causes bruising of the skin 3 to 6 hours after the bite. The skin around the bite appears tight and discolored. Blisters, often filled with blood, may form in the bite area. Without treatment, tissue around the bite may be destroyed. […] Other symptoms include fever, chills, general weakness, faintness, sweating, anxiety, confusion, nausea, vomiting, and diarrhea. Some of these symptoms may be caused by terror rather than venom. The gums may bleed, and blood may appear in the persons vomit, stools, and urine. Breathing difficulties can occur, particularly after Mojave rattlesnake bites. Some people may have chest pain. Hours later, people may have a headache, blurred vision, drooping eyelids, and a dry mouth.

• #30 Clinical Features And Management Of Snake Bite

  https://pmc.ncbi.nlm.nih.gov/articles/PMC4925324/

  Haemostatic abnormalities are characteristic of envenoming by Viperidae. Persistent bleeding from fang puncture wounds, venepuncture or injection sites, and other new and partially healed wounds suggest that the blood is incoagulable. Spontaneous systemic haemorrhage is most often detected in the gingival sulci. Epistaxis, haematemesis, cutaneous ecchymoses, haemoptysis, subconjunctival, retroperitoneal and intracranial haemorrhages are also reported. Viper and sea snake venoms also cause intravascular haemolysis. […] Elapid and sea snake venoms have significant neurotoxicity. Following an elapid bite, paralysis is first detectable as ptosis and external ophthalmoplegia appearing as early as 15 minutes after the bite. Sometimes the onset maybe delayed for 10 hours or more. Later the face, palate, jaws, tongue, vocal cords, neck muscles, and muscles of deglutition become paralysed. Airway obstruction or paralysis of the intercostal muscles and diaphragm cause respiratory failure. Neurotoxic effects are completely reversible either acutely in response to antivenom or anticholinesterases or may wear off spontaneously in 1 to 7 days. It is important to note that these neurotoxins do not cross blood brain barrier and do not alter consciousness.

• #31 Clinical Features And Management Of Snake Bite

  https://pmc.ncbi.nlm.nih.gov/articles/PMC4925324/

  Haemostatic abnormalities are characteristic of envenoming by Viperidae. Persistent bleeding from fang puncture wounds, venepuncture or injection sites, and other new and partially healed wounds suggest that the blood is incoagulable. Spontaneous systemic haemorrhage is most often detected in the gingival sulci. Epistaxis, haematemesis, cutaneous ecchymoses, haemoptysis, subconjunctival, retroperitoneal and intracranial haemorrhages are also reported. Viper and sea snake venoms also cause intravascular haemolysis. […] Elapid and sea snake venoms have significant neurotoxicity. Following an elapid bite, paralysis is first detectable as ptosis and external ophthalmoplegia appearing as early as 15 minutes after the bite. Sometimes the onset maybe delayed for 10 hours or more. Later the face, palate, jaws, tongue, vocal cords, neck muscles, and muscles of deglutition become paralysed. Airway obstruction or paralysis of the intercostal muscles and diaphragm cause respiratory failure. Neurotoxic effects are completely reversible either acutely in response to antivenom or anticholinesterases or may wear off spontaneously in 1 to 7 days. It is important to note that these neurotoxins do not cross blood brain barrier and do not alter consciousness.

• #32  

  https://www.saem.org/about-saem/academies-interest-groups-affiliates2/cdem/for-students/online-education/m4-curriculum/group-m4-environmental/snake-bites

  Coral snake envenomation may present with serious systemic toxicity with little findings at the actual site of envenomation due to the venoms lack of cytotoxicity. The neurologic abnormalities may include weakness, numbness, fasciculations, tremor, diplopia, bulbar palsies with slurred speech, dysphagia and respiratory paralysis (immediate cause of death). Ptosis is frequently the initial sign of toxicity. Coral snakes have the potential to cause high morbidity with respiratory failure, neurologic dysfunction and cardiovascular collapse, requiring airway and respiratory management lasting several weeks. Onset of clinical effects following envenomation occurs between one and seven hours but may be delayed up to eighteen hours. […] Because children have smaller body mass, smaller limbs, and less subcutaneous tissue, they can potentially receive more venom per kilogram body weight and therefore have more clinical severity than adults.

• #33 Snake bites – first aid, treatment and symptoms | healthdirect

  https://www.healthdirect.gov.au/snake-bites

  All snake bites must be treated as potentially life-threatening. If you have been bitten by a snake, call triple zero (000) and ask for an ambulance. […] If you think you have been bitten by a snake you need to go to hospital. […] Your symptoms can depend on the type of snake you were bitten by. […] Snake bite symptoms can depend on the type of snake that bit you. […] Symptoms of a venomous bite include: bite marks on the skin these might be obvious puncture wounds or almost invisible small scratches, swelling, bruising or bleeding from the bite, severe pain around the bite this might take time to develop. […] Once the venom starts to spread in your body, you may develop other symptoms, such as: breathing difficulties, irregular heartbeat, nausea (feeling sick), vomiting (being sick) or abdominal pain, headache, confusion or dizziness, blurry vision, muscle weakness or paralysis (being unable to move).

• #34 Snakebite: Symptoms of a Pit Viper Bite Information

  https://www.columbiadoctors.org/health-library/article/snakebite-symptoms-pit-viper-bite/

  Pit vipers, such as the rattlesnake, copperhead, and cottonmouth (also called water moccasin), are poisonous (venomous) snakes. They leave one, two, or three puncture marks on the skin, but you won’t always see any marks. […] Symptoms of a pit viper snakebite usually appear within a few minutes to a few hours after a bite and may include: Severe, immediate pain with rapid swelling. Bruising of the skin. Trouble breathing. Changes in heart rate or rhythm. A metallic, rubbery, or minty taste in the mouth. Numbness or tingling around the mouth, tongue, scalp, feet, or the bite area. Swelling in lymph nodes near the bite. Signs of shock. […] The severity of symptoms will depend on the type of snake that bit you, how much venom was injected with the bite (envenomation), and your personal health risks. Even if you do not have symptoms within 8 hours of a bite, continue to watch for symptoms for up to 2 weeks.

• #35 Responding to Snake Bites

  https://www.ouhealth.com/blog/2024/july/responding-to-snake-bites/

  If the snake is nonvenomous, the most typical symptom is pain on the affected part. […] If the bite is from a venomous snake like a cottonmouth, rattlesnake, or coral snake, severe burning pain will develop on the bite mark within 20 minutes. Swelling and bruising will follow along with: Labored breathing, Nausea, Vomiting, Diarrhea, General sense of weakness. […] Sometimes, the toxins can also affect the nervous system, which means the victim can have difficulty speaking.

• #36 Clinical Features And Management Of Snake Bite

  https://pmc.ncbi.nlm.nih.gov/articles/PMC4925324/

  Haemostatic abnormalities are characteristic of envenoming by Viperidae. Persistent bleeding from fang puncture wounds, venepuncture or injection sites, and other new and partially healed wounds suggest that the blood is incoagulable. Spontaneous systemic haemorrhage is most often detected in the gingival sulci. Epistaxis, haematemesis, cutaneous ecchymoses, haemoptysis, subconjunctival, retroperitoneal and intracranial haemorrhages are also reported. Viper and sea snake venoms also cause intravascular haemolysis. […] Elapid and sea snake venoms have significant neurotoxicity. Following an elapid bite, paralysis is first detectable as ptosis and external ophthalmoplegia appearing as early as 15 minutes after the bite. Sometimes the onset maybe delayed for 10 hours or more. Later the face, palate, jaws, tongue, vocal cords, neck muscles, and muscles of deglutition become paralysed. Airway obstruction or paralysis of the intercostal muscles and diaphragm cause respiratory failure. Neurotoxic effects are completely reversible either acutely in response to antivenom or anticholinesterases or may wear off spontaneously in 1 to 7 days. It is important to note that these neurotoxins do not cross blood brain barrier and do not alter consciousness.

• #37 Clinical Features And Management Of Snake Bite

  https://pmc.ncbi.nlm.nih.gov/articles/PMC4925324/

  Haemostatic abnormalities are characteristic of envenoming by Viperidae. Persistent bleeding from fang puncture wounds, venepuncture or injection sites, and other new and partially healed wounds suggest that the blood is incoagulable. Spontaneous systemic haemorrhage is most often detected in the gingival sulci. Epistaxis, haematemesis, cutaneous ecchymoses, haemoptysis, subconjunctival, retroperitoneal and intracranial haemorrhages are also reported. Viper and sea snake venoms also cause intravascular haemolysis. […] Elapid and sea snake venoms have significant neurotoxicity. Following an elapid bite, paralysis is first detectable as ptosis and external ophthalmoplegia appearing as early as 15 minutes after the bite. Sometimes the onset maybe delayed for 10 hours or more. Later the face, palate, jaws, tongue, vocal cords, neck muscles, and muscles of deglutition become paralysed. Airway obstruction or paralysis of the intercostal muscles and diaphragm cause respiratory failure. Neurotoxic effects are completely reversible either acutely in response to antivenom or anticholinesterases or may wear off spontaneously in 1 to 7 days. It is important to note that these neurotoxins do not cross blood brain barrier and do not alter consciousness.

• #38 Clinical Features And Management Of Snake Bite

  https://pmc.ncbi.nlm.nih.gov/articles/PMC4925324/

  Haemostatic abnormalities are characteristic of envenoming by Viperidae. Persistent bleeding from fang puncture wounds, venepuncture or injection sites, and other new and partially healed wounds suggest that the blood is incoagulable. Spontaneous systemic haemorrhage is most often detected in the gingival sulci. Epistaxis, haematemesis, cutaneous ecchymoses, haemoptysis, subconjunctival, retroperitoneal and intracranial haemorrhages are also reported. Viper and sea snake venoms also cause intravascular haemolysis. […] Elapid and sea snake venoms have significant neurotoxicity. Following an elapid bite, paralysis is first detectable as ptosis and external ophthalmoplegia appearing as early as 15 minutes after the bite. Sometimes the onset maybe delayed for 10 hours or more. Later the face, palate, jaws, tongue, vocal cords, neck muscles, and muscles of deglutition become paralysed. Airway obstruction or paralysis of the intercostal muscles and diaphragm cause respiratory failure. Neurotoxic effects are completely reversible either acutely in response to antivenom or anticholinesterases or may wear off spontaneously in 1 to 7 days. It is important to note that these neurotoxins do not cross blood brain barrier and do not alter consciousness.

• #39 Clinical Features And Management Of Snake Bite

  https://pmc.ncbi.nlm.nih.gov/articles/PMC4925324/

  Haemostatic abnormalities are characteristic of envenoming by Viperidae. Persistent bleeding from fang puncture wounds, venepuncture or injection sites, and other new and partially healed wounds suggest that the blood is incoagulable. Spontaneous systemic haemorrhage is most often detected in the gingival sulci. Epistaxis, haematemesis, cutaneous ecchymoses, haemoptysis, subconjunctival, retroperitoneal and intracranial haemorrhages are also reported. Viper and sea snake venoms also cause intravascular haemolysis. […] Elapid and sea snake venoms have significant neurotoxicity. Following an elapid bite, paralysis is first detectable as ptosis and external ophthalmoplegia appearing as early as 15 minutes after the bite. Sometimes the onset maybe delayed for 10 hours or more. Later the face, palate, jaws, tongue, vocal cords, neck muscles, and muscles of deglutition become paralysed. Airway obstruction or paralysis of the intercostal muscles and diaphragm cause respiratory failure. Neurotoxic effects are completely reversible either acutely in response to antivenom or anticholinesterases or may wear off spontaneously in 1 to 7 days. It is important to note that these neurotoxins do not cross blood brain barrier and do not alter consciousness.

• #40 Clinical Features And Management Of Snake Bite

  https://pmc.ncbi.nlm.nih.gov/articles/PMC4925324/

  Haemostatic abnormalities are characteristic of envenoming by Viperidae. Persistent bleeding from fang puncture wounds, venepuncture or injection sites, and other new and partially healed wounds suggest that the blood is incoagulable. Spontaneous systemic haemorrhage is most often detected in the gingival sulci. Epistaxis, haematemesis, cutaneous ecchymoses, haemoptysis, subconjunctival, retroperitoneal and intracranial haemorrhages are also reported. Viper and sea snake venoms also cause intravascular haemolysis. […] Elapid and sea snake venoms have significant neurotoxicity. Following an elapid bite, paralysis is first detectable as ptosis and external ophthalmoplegia appearing as early as 15 minutes after the bite. Sometimes the onset maybe delayed for 10 hours or more. Later the face, palate, jaws, tongue, vocal cords, neck muscles, and muscles of deglutition become paralysed. Airway obstruction or paralysis of the intercostal muscles and diaphragm cause respiratory failure. Neurotoxic effects are completely reversible either acutely in response to antivenom or anticholinesterases or may wear off spontaneously in 1 to 7 days. It is important to note that these neurotoxins do not cross blood brain barrier and do not alter consciousness.

• #41 Clinical Features And Management Of Snake Bite

  https://pmc.ncbi.nlm.nih.gov/articles/PMC4925324/

  Haemostatic abnormalities are characteristic of envenoming by Viperidae. Persistent bleeding from fang puncture wounds, venepuncture or injection sites, and other new and partially healed wounds suggest that the blood is incoagulable. Spontaneous systemic haemorrhage is most often detected in the gingival sulci. Epistaxis, haematemesis, cutaneous ecchymoses, haemoptysis, subconjunctival, retroperitoneal and intracranial haemorrhages are also reported. Viper and sea snake venoms also cause intravascular haemolysis. […] Elapid and sea snake venoms have significant neurotoxicity. Following an elapid bite, paralysis is first detectable as ptosis and external ophthalmoplegia appearing as early as 15 minutes after the bite. Sometimes the onset maybe delayed for 10 hours or more. Later the face, palate, jaws, tongue, vocal cords, neck muscles, and muscles of deglutition become paralysed. Airway obstruction or paralysis of the intercostal muscles and diaphragm cause respiratory failure. Neurotoxic effects are completely reversible either acutely in response to antivenom or anticholinesterases or may wear off spontaneously in 1 to 7 days. It is important to note that these neurotoxins do not cross blood brain barrier and do not alter consciousness.

• #42 Snakebites – Injuries and Poisoning – Merck Manual Consumer Version

  https://www.merckmanuals.com/home/injuries-and-poisoning/bites-and-stings/snakebites

  The symptoms of snake venom poisoning vary widely, depending on the following: […] Bites by most pit vipers rapidly cause pain. Not all bites inject venom, but if the wound oozes, venom was probably injected. Redness and swelling usually follow within 30 to 60 minutes and can affect the entire leg or arm within several hours. Moderate or severe pit viper poisoning commonly causes bruising of the skin 3 to 6 hours after the bite. The skin around the bite appears tight and discolored. Blisters, often filled with blood, may form in the bite area. Without treatment, tissue around the bite may be destroyed. […] Other symptoms include fever, chills, general weakness, faintness, sweating, anxiety, confusion, nausea, vomiting, and diarrhea. Some of these symptoms may be caused by terror rather than venom. The gums may bleed, and blood may appear in the persons vomit, stools, and urine. Breathing difficulties can occur, particularly after Mojave rattlesnake bites. Some people may have chest pain. Hours later, people may have a headache, blurred vision, drooping eyelids, and a dry mouth.

• #43 Clinical Features And Management Of Snake Bite

  https://pmc.ncbi.nlm.nih.gov/articles/PMC4925324/

  Haemostatic abnormalities are characteristic of envenoming by Viperidae. Persistent bleeding from fang puncture wounds, venepuncture or injection sites, and other new and partially healed wounds suggest that the blood is incoagulable. Spontaneous systemic haemorrhage is most often detected in the gingival sulci. Epistaxis, haematemesis, cutaneous ecchymoses, haemoptysis, subconjunctival, retroperitoneal and intracranial haemorrhages are also reported. Viper and sea snake venoms also cause intravascular haemolysis. […] Elapid and sea snake venoms have significant neurotoxicity. Following an elapid bite, paralysis is first detectable as ptosis and external ophthalmoplegia appearing as early as 15 minutes after the bite. Sometimes the onset maybe delayed for 10 hours or more. Later the face, palate, jaws, tongue, vocal cords, neck muscles, and muscles of deglutition become paralysed. Airway obstruction or paralysis of the intercostal muscles and diaphragm cause respiratory failure. Neurotoxic effects are completely reversible either acutely in response to antivenom or anticholinesterases or may wear off spontaneously in 1 to 7 days. It is important to note that these neurotoxins do not cross blood brain barrier and do not alter consciousness.

• #44 Clinical Features And Management Of Snake Bite

  https://pmc.ncbi.nlm.nih.gov/articles/PMC4925324/

  Sea snake venom contains myotoxins that cause myalgias, myopathy and rhabdomyolysis. Generalized aching, stiffness and tenderness of muscles develop 0.5 to 3.5 hours after the bite. Trismus is common. Myoglobinuria secondary to rhabdomyolysis appears 3 to 8 hours after the bite. […] Viper and elapid venom can cause direct myocardial damage manifesting as arrhythmias, bradycardia, tachycardia or hypotension. […] Renal failure is secondary to ischaemia in Viper bites (especially Russell’s viper). […] A variety of factors contribute to shock. They include fright, hypovolemia (due to extravasation of fluids and blood loss), myocardial depression, haemorrhage into the adrenals and pituitary and increased kinin production (as in Viper bite).

• #45 Clinical Features And Management Of Snake Bite

  https://pmc.ncbi.nlm.nih.gov/articles/PMC4925324/

  Sea snake venom contains myotoxins that cause myalgias, myopathy and rhabdomyolysis. Generalized aching, stiffness and tenderness of muscles develop 0.5 to 3.5 hours after the bite. Trismus is common. Myoglobinuria secondary to rhabdomyolysis appears 3 to 8 hours after the bite. […] Viper and elapid venom can cause direct myocardial damage manifesting as arrhythmias, bradycardia, tachycardia or hypotension. […] Renal failure is secondary to ischaemia in Viper bites (especially Russell’s viper). […] A variety of factors contribute to shock. They include fright, hypovolemia (due to extravasation of fluids and blood loss), myocardial depression, haemorrhage into the adrenals and pituitary and increased kinin production (as in Viper bite).

• #46 Clinical Features And Management Of Snake Bite

  https://pmc.ncbi.nlm.nih.gov/articles/PMC4925324/

  Sea snake venom contains myotoxins that cause myalgias, myopathy and rhabdomyolysis. Generalized aching, stiffness and tenderness of muscles develop 0.5 to 3.5 hours after the bite. Trismus is common. Myoglobinuria secondary to rhabdomyolysis appears 3 to 8 hours after the bite. […] Viper and elapid venom can cause direct myocardial damage manifesting as arrhythmias, bradycardia, tachycardia or hypotension. […] Renal failure is secondary to ischaemia in Viper bites (especially Russell’s viper). […] A variety of factors contribute to shock. They include fright, hypovolemia (due to extravasation of fluids and blood loss), myocardial depression, haemorrhage into the adrenals and pituitary and increased kinin production (as in Viper bite).

• #47 Clinical Features And Management Of Snake Bite

  https://pmc.ncbi.nlm.nih.gov/articles/PMC4925324/

  Sea snake venom contains myotoxins that cause myalgias, myopathy and rhabdomyolysis. Generalized aching, stiffness and tenderness of muscles develop 0.5 to 3.5 hours after the bite. Trismus is common. Myoglobinuria secondary to rhabdomyolysis appears 3 to 8 hours after the bite. […] Viper and elapid venom can cause direct myocardial damage manifesting as arrhythmias, bradycardia, tachycardia or hypotension. […] Renal failure is secondary to ischaemia in Viper bites (especially Russell’s viper). […] A variety of factors contribute to shock. They include fright, hypovolemia (due to extravasation of fluids and blood loss), myocardial depression, haemorrhage into the adrenals and pituitary and increased kinin production (as in Viper bite).

• #48 Clinical Features And Management Of Snake Bite

  https://pmc.ncbi.nlm.nih.gov/articles/PMC4925324/

  Sea snake venom contains myotoxins that cause myalgias, myopathy and rhabdomyolysis. Generalized aching, stiffness and tenderness of muscles develop 0.5 to 3.5 hours after the bite. Trismus is common. Myoglobinuria secondary to rhabdomyolysis appears 3 to 8 hours after the bite. […] Viper and elapid venom can cause direct myocardial damage manifesting as arrhythmias, bradycardia, tachycardia or hypotension. […] Renal failure is secondary to ischaemia in Viper bites (especially Russell’s viper). […] A variety of factors contribute to shock. They include fright, hypovolemia (due to extravasation of fluids and blood loss), myocardial depression, haemorrhage into the adrenals and pituitary and increased kinin production (as in Viper bite).

• #49 Clinical Features And Management Of Snake Bite

  https://pmc.ncbi.nlm.nih.gov/articles/PMC4925324/

  Sea snake venom contains myotoxins that cause myalgias, myopathy and rhabdomyolysis. Generalized aching, stiffness and tenderness of muscles develop 0.5 to 3.5 hours after the bite. Trismus is common. Myoglobinuria secondary to rhabdomyolysis appears 3 to 8 hours after the bite. […] Viper and elapid venom can cause direct myocardial damage manifesting as arrhythmias, bradycardia, tachycardia or hypotension. […] Renal failure is secondary to ischaemia in Viper bites (especially Russell’s viper). […] A variety of factors contribute to shock. They include fright, hypovolemia (due to extravasation of fluids and blood loss), myocardial depression, haemorrhage into the adrenals and pituitary and increased kinin production (as in Viper bite).

• #50 logo-paypal

  https://envirobug.com.au/blogs/envirobug-blog/signs-and-symptoms-of-snake-bites?srsltid=AfmBOooU9gz7dRieDSh7gSlDcAPVGT961fK_FDV4MkcpmNuU80w7ifxr

  The usual snake bite development is: 1 Hour: A headache (an important symptom), irritability, photophobia, nausea, vomiting, diarrhoea, confusion; coagulation abnormalities; occasionally sudden hypotension with loss of consciousness. […] 1-3 Hours: Cranial nerve paralysis (ptosis, diplopia, dysphagia etc), abdominal pain, haemoglobinuria, hypertension, tachycardia, haemorrhage. […] 3 Hours: The leg, arm or affected area and lungs may experience paralysis leading to respiratory failure or difficulty in breathing. Blood flow on the upper and lower parts of the body and the surface of the skin may be restricted. A process called rhabdomyolysis is triggered, in which muscle tissue is broken down leading to the release of the constituents of muscle fibre in the body. A protein found in muscle cells that works as an oxygen supply unit to your muscles is released in urine. This condition can cause acute kidney injury and in a worse cases, acute kidney failure and death. […] This sequence of events is, of course, variable. For example, brown snake bite mark have been known to lead to dead within 5 minutes. Snake bites can be dangerous and deadly and you need to seek medical attention immediately.

• #51 Clinical Features And Management Of Snake Bite

  https://pmc.ncbi.nlm.nih.gov/articles/PMC4925324/

  Sea snake venom contains myotoxins that cause myalgias, myopathy and rhabdomyolysis. Generalized aching, stiffness and tenderness of muscles develop 0.5 to 3.5 hours after the bite. Trismus is common. Myoglobinuria secondary to rhabdomyolysis appears 3 to 8 hours after the bite. […] Viper and elapid venom can cause direct myocardial damage manifesting as arrhythmias, bradycardia, tachycardia or hypotension. […] Renal failure is secondary to ischaemia in Viper bites (especially Russell’s viper). […] A variety of factors contribute to shock. They include fright, hypovolemia (due to extravasation of fluids and blood loss), myocardial depression, haemorrhage into the adrenals and pituitary and increased kinin production (as in Viper bite).

• #52 Venomous Snakes at Work | Outdoor | CDC

  https://www.cdc.gov/niosh/outdoor-workers/about/venomous-snakes.html

  Signs or symptoms of a snake bite can vary depending on the type of snake. […] Around the wound, you may experience: Puncture marks, Bleeding, redness, swelling, bruising, or blistering, Severe pain and tenderness. […] After a snake bite, you may experience: Nausea, vomiting, or diarrhea, Trouble seeing or breathing, In extreme cases, breathing may stop, Rapid heart rate, weak pulse, low blood pressure, Metallic, mint, or rubber taste in the mouth, Increased salivation and sweating, Numbness or tingling around face and/or limbs, Muscle twitching. […] Workers are more likely to suffer long-term injuries than to die from snake bites. For those bitten by rattlesnakes, 10-44 percent will have lasting injuries. For example, they may lose all or part of a finger or lose the ability to use it.

• #53 Snakebite Treatment & Management: Approach Considerations, Prehospital Care, Emergency Department Care

  https://emedicine.medscape.com/article/168828-treatment

  The overall envenomation severity is determined by local and systemic findings and can be classified as follows: […] Dry bites – These occur when there is no venom deposition and therefore no signs or symptoms beyond a puncture wound; it has been estimated that fewer than 10% of pit viper bites and about 30-50% or coral snake bites are dry […] Minimal envenomations – These are characterized by local findings (eg, bruising or tenderness immediately adjacent to the bite site) and an absence of laboratory abnormalities and systemic findings […] Mild envenomations – These also lack laboratory abnormalities and systemic findings, but the local damage extends several centimeters from the bite site, all the way to a major joint (eg, ankle or wrist) […] Moderate envenomations – These may be associated with non-life-threatening signs and symptoms (eg, vomiting or hematotoxicity without bleeding), local damage that extends beyond two joints, or both

• #54 Snakebite Treatment & Management: Approach Considerations, Prehospital Care, Emergency Department Care

  https://emedicine.medscape.com/article/168828-treatment

  The overall envenomation severity is determined by local and systemic findings and can be classified as follows: […] Dry bites – These occur when there is no venom deposition and therefore no signs or symptoms beyond a puncture wound; it has been estimated that fewer than 10% of pit viper bites and about 30-50% or coral snake bites are dry […] Minimal envenomations – These are characterized by local findings (eg, bruising or tenderness immediately adjacent to the bite site) and an absence of laboratory abnormalities and systemic findings […] Mild envenomations – These also lack laboratory abnormalities and systemic findings, but the local damage extends several centimeters from the bite site, all the way to a major joint (eg, ankle or wrist) […] Moderate envenomations – These may be associated with non-life-threatening signs and symptoms (eg, vomiting or hematotoxicity without bleeding), local damage that extends beyond two joints, or both

• #55 Snakebite Treatment & Management: Approach Considerations, Prehospital Care, Emergency Department Care

  https://emedicine.medscape.com/article/168828-treatment

  The overall envenomation severity is determined by local and systemic findings and can be classified as follows: […] Dry bites – These occur when there is no venom deposition and therefore no signs or symptoms beyond a puncture wound; it has been estimated that fewer than 10% of pit viper bites and about 30-50% or coral snake bites are dry […] Minimal envenomations – These are characterized by local findings (eg, bruising or tenderness immediately adjacent to the bite site) and an absence of laboratory abnormalities and systemic findings […] Mild envenomations – These also lack laboratory abnormalities and systemic findings, but the local damage extends several centimeters from the bite site, all the way to a major joint (eg, ankle or wrist) […] Moderate envenomations – These may be associated with non-life-threatening signs and symptoms (eg, vomiting or hematotoxicity without bleeding), local damage that extends beyond two joints, or both

• #56 Snake Bites | CommonSpirit Health

  https://www.commonspirit.org/conditions-treatments/snake-bites

  The severity of symptoms will depend on the type of snake that bit you, how much venom was injected with the bite (envenomation), and your personal health risks. Even if you do not have symptoms within 8 hours of a bite, continue to watch for symptoms for up to 2 weeks. […] If you do not have symptoms within 8 to 12 hours, the snake might not have injected any venom; this is called a dry bite. At least 25%, perhaps up to 50%, of bites are dry. […] Dry bites or bites where only a very small amount of venom is injected may cause slight bleeding, pain, and swelling at the bite injury. […] If a moderate amount of venom was injected, you are more likely to have severe pain, swelling of the whole limb, and general ill feelings, such as nausea, vomiting, and weakness. Swelling of the whole limb is an effect of the venom and can cause compartment syndrome. This is rare. […] Large amounts of venom usually cause severe pain and severe swelling. You may have trouble breathing, moderate to severe bleeding, and signs of shock after this type of bite.

• #57  

  https://www.saem.org/about-saem/academies-interest-groups-affiliates2/cdem/for-students/online-education/m4-curriculum/group-m4-environmental/snake-bites

  Viperidae venom is a complex solution of various proteins, peptides and enzymes that allow the snake to kill its prey quickly and begin the digestive process. These bites usually cause severe pain from the time of envenomation and swelling that can progress at various rates due to lymphatic spread. The bite site may become edematous and tense, develop ecchymosis, fluid filled or hemorrhagic bullae and extensive tissue destruction may eventually develop. Swelling may be marked, but compartment syndrome is rare. The full extent of local or systemic involvement may not be evident for hours. Hematologic abnormalities are common in Viperidae envenomation, including thrombocytopenia, elevated PT, and decreased fibrinogen. Systemic toxicity can result in oral paresthesias, metallic taste, fasciculations, tachycardia, hypotension and anaphylaxis. As a general rule, if there are no symptoms within six to eight hours, the patient can be considered medically cleared.

• #58 Snakebite Treatment & Management: Approach Considerations, Prehospital Care, Emergency Department Care

  https://emedicine.medscape.com/article/168828-treatment

  The overall envenomation severity is determined by local and systemic findings and can be classified as follows: […] Dry bites – These occur when there is no venom deposition and therefore no signs or symptoms beyond a puncture wound; it has been estimated that fewer than 10% of pit viper bites and about 30-50% or coral snake bites are dry […] Minimal envenomations – These are characterized by local findings (eg, bruising or tenderness immediately adjacent to the bite site) and an absence of laboratory abnormalities and systemic findings […] Mild envenomations – These also lack laboratory abnormalities and systemic findings, but the local damage extends several centimeters from the bite site, all the way to a major joint (eg, ankle or wrist) […] Moderate envenomations – These may be associated with non-life-threatening signs and symptoms (eg, vomiting or hematotoxicity without bleeding), local damage that extends beyond two joints, or both

• #59 Snakebite Treatment & Management: Approach Considerations, Prehospital Care, Emergency Department Care

  https://emedicine.medscape.com/article/168828-treatment

  The overall envenomation severity is determined by local and systemic findings and can be classified as follows: […] Dry bites – These occur when there is no venom deposition and therefore no signs or symptoms beyond a puncture wound; it has been estimated that fewer than 10% of pit viper bites and about 30-50% or coral snake bites are dry […] Minimal envenomations – These are characterized by local findings (eg, bruising or tenderness immediately adjacent to the bite site) and an absence of laboratory abnormalities and systemic findings […] Mild envenomations – These also lack laboratory abnormalities and systemic findings, but the local damage extends several centimeters from the bite site, all the way to a major joint (eg, ankle or wrist) […] Moderate envenomations – These may be associated with non-life-threatening signs and symptoms (eg, vomiting or hematotoxicity without bleeding), local damage that extends beyond two joints, or both

• #60 Snakebite Treatment & Management: Approach Considerations, Prehospital Care, Emergency Department Care

  https://emedicine.medscape.com/article/168828-treatment

  The overall envenomation severity is determined by local and systemic findings and can be classified as follows: […] Dry bites – These occur when there is no venom deposition and therefore no signs or symptoms beyond a puncture wound; it has been estimated that fewer than 10% of pit viper bites and about 30-50% or coral snake bites are dry […] Minimal envenomations – These are characterized by local findings (eg, bruising or tenderness immediately adjacent to the bite site) and an absence of laboratory abnormalities and systemic findings […] Mild envenomations – These also lack laboratory abnormalities and systemic findings, but the local damage extends several centimeters from the bite site, all the way to a major joint (eg, ankle or wrist) […] Moderate envenomations – These may be associated with non-life-threatening signs and symptoms (eg, vomiting or hematotoxicity without bleeding), local damage that extends beyond two joints, or both

• #61 Snakebite: Symptoms of a Pit Viper Bite Information

  https://www.columbiadoctors.org/health-library/article/snakebite-symptoms-pit-viper-bite/

  If a moderate amount of venom was injected, you are more likely to have severe pain, swelling of the whole limb, and general ill feelings, such as nausea, vomiting, and weakness. Swelling of the whole limb is an effect of the venom and can cause compartment syndrome. This is rare. […] Large amounts of venom usually cause severe pain and severe swelling. You may have trouble breathing, moderate to severe bleeding, and signs of shock after this type of bite. […] If venom is injected, about 35% are mild envenomations, 25% are moderate envenomations, and 10% to 15% are severe.

• #62 Snakebite: Symptoms of a Pit Viper Bite Information

  https://www.columbiadoctors.org/health-library/article/snakebite-symptoms-pit-viper-bite/

  If a moderate amount of venom was injected, you are more likely to have severe pain, swelling of the whole limb, and general ill feelings, such as nausea, vomiting, and weakness. Swelling of the whole limb is an effect of the venom and can cause compartment syndrome. This is rare. […] Large amounts of venom usually cause severe pain and severe swelling. You may have trouble breathing, moderate to severe bleeding, and signs of shock after this type of bite. […] If venom is injected, about 35% are mild envenomations, 25% are moderate envenomations, and 10% to 15% are severe.

• #63 Snakebite: Symptoms of a Pit Viper Bite Information

  https://www.columbiadoctors.org/health-library/article/snakebite-symptoms-pit-viper-bite/

  If a moderate amount of venom was injected, you are more likely to have severe pain, swelling of the whole limb, and general ill feelings, such as nausea, vomiting, and weakness. Swelling of the whole limb is an effect of the venom and can cause compartment syndrome. This is rare. […] Large amounts of venom usually cause severe pain and severe swelling. You may have trouble breathing, moderate to severe bleeding, and signs of shock after this type of bite. […] If venom is injected, about 35% are mild envenomations, 25% are moderate envenomations, and 10% to 15% are severe.

• #64 Snakebite Treatment & Management: Approach Considerations, Prehospital Care, Emergency Department Care

  https://emedicine.medscape.com/article/168828-treatment

  The overall envenomation severity is determined by local and systemic findings and can be classified as follows: […] Dry bites – These occur when there is no venom deposition and therefore no signs or symptoms beyond a puncture wound; it has been estimated that fewer than 10% of pit viper bites and about 30-50% or coral snake bites are dry […] Minimal envenomations – These are characterized by local findings (eg, bruising or tenderness immediately adjacent to the bite site) and an absence of laboratory abnormalities and systemic findings […] Mild envenomations – These also lack laboratory abnormalities and systemic findings, but the local damage extends several centimeters from the bite site, all the way to a major joint (eg, ankle or wrist) […] Moderate envenomations – These may be associated with non-life-threatening signs and symptoms (eg, vomiting or hematotoxicity without bleeding), local damage that extends beyond two joints, or both

• #65 Snakebite: Symptoms of a Pit Viper Bite Information

  https://www.columbiadoctors.org/health-library/article/snakebite-symptoms-pit-viper-bite/

  If a moderate amount of venom was injected, you are more likely to have severe pain, swelling of the whole limb, and general ill feelings, such as nausea, vomiting, and weakness. Swelling of the whole limb is an effect of the venom and can cause compartment syndrome. This is rare. […] Large amounts of venom usually cause severe pain and severe swelling. You may have trouble breathing, moderate to severe bleeding, and signs of shock after this type of bite. […] If venom is injected, about 35% are mild envenomations, 25% are moderate envenomations, and 10% to 15% are severe.

• #66 Snakebite Treatment & Management: Approach Considerations, Prehospital Care, Emergency Department Care

  https://emedicine.medscape.com/article/168828-treatment

  Severe envenomations – These result in extensive local damage (eg, beyond two joints), significant systemic toxicity (eg, hypotension, airway swelling, or muscle paralysis), or both. […] Insufficient monitoring is a common mistake in the management of snakebites. Patients may have few symptoms initially, only to develop signs of envenomation later. Asymptomatic patients should be monitored for at least 8 hours; those with any evidence of envenomation should be monitored for at least 12-24 hours. […] If the swelling and tenderness are more than minimal and have extended beyond a major joint (eg, wrist or ankle), antivenom is warranted. […] If there is significant local tissue injury (eg, necrosis), antivenom is also indicated, even if the swelling has not progressed across a joint. […] Patients with suspected dry bites should be monitored for at least 8 hours, and laboratory tests should be rechecked before discharge. Snakebites are dynamic injuries, and bites that appear insignificant at first can evolve into severe envenomations. Minimal envenomations that do not require treatment with antivenom initially should be observed for a minimum of 12-24 hours to see if there is any progression of the local effects or if any systemic or hematologic toxicity develops.

• #67 Snakebite Treatment & Management: Approach Considerations, Prehospital Care, Emergency Department Care

  https://emedicine.medscape.com/article/168828-treatment

  Severe envenomations – These result in extensive local damage (eg, beyond two joints), significant systemic toxicity (eg, hypotension, airway swelling, or muscle paralysis), or both. […] Insufficient monitoring is a common mistake in the management of snakebites. Patients may have few symptoms initially, only to develop signs of envenomation later. Asymptomatic patients should be monitored for at least 8 hours; those with any evidence of envenomation should be monitored for at least 12-24 hours. […] If the swelling and tenderness are more than minimal and have extended beyond a major joint (eg, wrist or ankle), antivenom is warranted. […] If there is significant local tissue injury (eg, necrosis), antivenom is also indicated, even if the swelling has not progressed across a joint. […] Patients with suspected dry bites should be monitored for at least 8 hours, and laboratory tests should be rechecked before discharge. Snakebites are dynamic injuries, and bites that appear insignificant at first can evolve into severe envenomations. Minimal envenomations that do not require treatment with antivenom initially should be observed for a minimum of 12-24 hours to see if there is any progression of the local effects or if any systemic or hematologic toxicity develops.

• #68 Clinical Features And Management Of Snake Bite

  https://pmc.ncbi.nlm.nih.gov/articles/PMC4925324/

  Haemostatic abnormalities are characteristic of envenoming by Viperidae. Persistent bleeding from fang puncture wounds, venepuncture or injection sites, and other new and partially healed wounds suggest that the blood is incoagulable. Spontaneous systemic haemorrhage is most often detected in the gingival sulci. Epistaxis, haematemesis, cutaneous ecchymoses, haemoptysis, subconjunctival, retroperitoneal and intracranial haemorrhages are also reported. Viper and sea snake venoms also cause intravascular haemolysis. […] Elapid and sea snake venoms have significant neurotoxicity. Following an elapid bite, paralysis is first detectable as ptosis and external ophthalmoplegia appearing as early as 15 minutes after the bite. Sometimes the onset maybe delayed for 10 hours or more. Later the face, palate, jaws, tongue, vocal cords, neck muscles, and muscles of deglutition become paralysed. Airway obstruction or paralysis of the intercostal muscles and diaphragm cause respiratory failure. Neurotoxic effects are completely reversible either acutely in response to antivenom or anticholinesterases or may wear off spontaneously in 1 to 7 days. It is important to note that these neurotoxins do not cross blood brain barrier and do not alter consciousness.

• #69 Snakebite: Symptoms of a Pit Viper Bite Information

  https://www.columbiadoctors.org/health-library/article/snakebite-symptoms-pit-viper-bite/

  If a moderate amount of venom was injected, you are more likely to have severe pain, swelling of the whole limb, and general ill feelings, such as nausea, vomiting, and weakness. Swelling of the whole limb is an effect of the venom and can cause compartment syndrome. This is rare. […] Large amounts of venom usually cause severe pain and severe swelling. You may have trouble breathing, moderate to severe bleeding, and signs of shock after this type of bite. […] If venom is injected, about 35% are mild envenomations, 25% are moderate envenomations, and 10% to 15% are severe.

• #70 Rattlesnake Bite: Symptoms, Treatment, and Recovery Timeline

  https://www.healthline.com/health/rattlesnake-bite

  Rattlesnake bites are a medical emergency and can be fatal if left untreated. Seek help within half an hour. Left untreated, it can lead to organ failure and death in two to three days. […] If you’re bitten by a rattlesnake, you may notice one or two puncture marks made by their large fangs. […] You’ll usually experience some pain, tingling, or burning in the area where you’ve been bitten. There may also be some swelling, bruising, or discoloration at the site. Other common symptoms include: numbness in the face or limbs, lightheadedness, weakness, nausea or vomiting, sweating, salivating, blurred vision, difficulty breathing. […] Once bitten, the venom takes only seconds to travel from the rattlesnake’s retractable fangs, through your skin, and into your bloodstream. You’ll begin to see symptoms immediately, but your symptoms will worsen over time.

• #71 Snake bites: MedlinePlus Medical EncyclopediaLock

  https://medlineplus.gov/ency/article/000031.htm

  Snake bites occur when a snake bites the skin. They are medical emergencies if the snake is venomous. […] Symptoms depend on the type of snake, but may include: […] Rattlesnake bites are painful when they occur. Symptoms usually begin right away and may include: […] Cottonmouth and copperhead bites are painful right when they occur. Symptoms, which usually begin right away, may include: […] Coral snake bites may be painless at first. Major symptoms may not develop for hours.

• #72 Quick Facts:Snakebites – Merck Manual Consumer Version

  https://www.merckmanuals.com/home/quick-facts-injuries-and-poisoning/bites-and-stings/snakebites

  Both poisonous and nonpoisonous snakes bite people. Poisonous snakes may inject venom (poison) when they bite. In the United States, people rarely die from snakebites. Some other countries have different poisonous snakes that kill many people. […] Most poisonous bites are caused by rattlesnakes. Coral snake bites are very rare. […] Nonpoisonous snakebites cause small puncture wounds that are slightly painful. However, if you’re scared about being bitten, you may breathe fast, feel sweaty and sick to your stomach, and feel your heart pounding. These symptoms may make you think you have a poisonous snakebite. […] Poisonous snakebites cause different symptoms depending on: […] […] Not all pit viper bites involve venom. If the bite doesn’t hurt or swell in the first 30 to 60 minutes, you probably didn’t get any venom. If the bite oozes, that can be a sign of venom.

• #73 Snake Bites: Types, Symptoms, and Treatments

  https://www.healthline.com/health/snake-bites

  About 7,000 venomous snake bite cases are reported every year in the United States. A bite from a venomous snake is rarely deadly about 6 fatalities are reported every year but it should always be treated as a medical emergency. […] Venomous snake bites can produce an array of symptoms, including localized pain and swelling, convulsions, nausea, and even paralysis. […] To identify a snake bite, consider the following general symptoms: two puncture wounds, swelling and redness around the wounds, pain at the bite site, difficulty breathing, vomiting and nausea, blurred vision, sweating and salivating, numbness in the face and limbs. […] Symptoms specific to rattlesnake bites are immediate and include: severe pain, drooping eyelids, low blood pressure, thirst, tiredness or muscle weakness.

• #74 Snakebites – Injuries and Poisoning – Merck Manual Consumer Version

  https://www.merckmanuals.com/home/injuries-and-poisoning/bites-and-stings/snakebites

  The symptoms of snake venom poisoning vary widely, depending on the following: […] Bites by most pit vipers rapidly cause pain. Not all bites inject venom, but if the wound oozes, venom was probably injected. Redness and swelling usually follow within 30 to 60 minutes and can affect the entire leg or arm within several hours. Moderate or severe pit viper poisoning commonly causes bruising of the skin 3 to 6 hours after the bite. The skin around the bite appears tight and discolored. Blisters, often filled with blood, may form in the bite area. Without treatment, tissue around the bite may be destroyed. […] Other symptoms include fever, chills, general weakness, faintness, sweating, anxiety, confusion, nausea, vomiting, and diarrhea. Some of these symptoms may be caused by terror rather than venom. The gums may bleed, and blood may appear in the persons vomit, stools, and urine. Breathing difficulties can occur, particularly after Mojave rattlesnake bites. Some people may have chest pain. Hours later, people may have a headache, blurred vision, drooping eyelids, and a dry mouth.

• #75 Snake Bites: Types, Symptoms, and Treatments

  https://www.healthline.com/health/snake-bites

  About 7,000 venomous snake bite cases are reported every year in the United States. A bite from a venomous snake is rarely deadly about 6 fatalities are reported every year but it should always be treated as a medical emergency. […] Venomous snake bites can produce an array of symptoms, including localized pain and swelling, convulsions, nausea, and even paralysis. […] To identify a snake bite, consider the following general symptoms: two puncture wounds, swelling and redness around the wounds, pain at the bite site, difficulty breathing, vomiting and nausea, blurred vision, sweating and salivating, numbness in the face and limbs. […] Symptoms specific to rattlesnake bites are immediate and include: severe pain, drooping eyelids, low blood pressure, thirst, tiredness or muscle weakness.

• #76 Snake Bites: Types, Symptoms, and Treatments

  https://www.healthline.com/health/snake-bites

  Water moccasin bites share symptoms with copperhead bites. Specific symptoms include: immediate pain and symptoms, change in skin color, shock, low blood pressure, weakness. […] Copperhead snake bites share symptoms with water moccasin snake bites. Symptoms can include: immediate pain and symptoms, change in skin color, shock, low blood pressure, weakness. […] Symptoms specific to coral snake bites include: pain that is not immediate, symptoms that set in hours after the bite, convulsions, drooping eyelids, change in skin color, stomach pain, difficulty swallowing, headache, shock, paralysis. […] The most important thing to do for a snake bite is to get emergency medical help as soon as possible. […] If the situation is life threatening, the doctor may administer antivenom. This is a substance created with snake venom to counter the snake bite symptoms. Its injected into the victim. The sooner the antivenom is used, the more effective it will be.

• #77 Snakebite – Wikipedia

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

  Two puncture wounds, redness, swelling, severe pain at the area. […] This may result in redness, swelling, and severe pain at the area, which may take up to an hour to appear. […] The venom may cause bleeding, kidney failure, a severe allergic reaction, tissue death around the bite, or breathing problems. […] Symptoms may become more life-threatening over time, developing into hypotension, tachypnea, severe tachycardia, severe internal bleeding, altered sensorium, kidney failure, and respiratory failure. […] Some Australian elapids and most viper envenomations will cause coagulopathy, sometimes so severe that a person may bleed spontaneously from the mouth, nose, and even old, seemingly healed wounds. […] The venom of elapids, including sea snakes, kraits, cobras, king cobra, mambas, and many Australian species, contains toxins which attack the nervous system, causing neurotoxicity. […] Venom emitted from some types of cobras, almost all vipers, and some sea snakes cause necrosis of muscle tissue. […] Snakebite is also known to cause depression and post-traumatic stress disorder in a high proportion of people who survive.

• #78 Snake Bites | Boston Children’s Hospital

  https://www.childrenshospital.org/conditions/snake-bites

  What are the symptoms of pit viper bites? The following are the most common symptoms of pit viper bites. However, each child may experience symptoms differently. Local symptoms may include: bloody wound discharge, fang marks in the skin, swelling at the site of the bite which may progress to an entire extremity within hours, severe localized pain, burning and warmth, discoloration, such as redness and bruising, enlarged lymph nodes in the area. Systematic symptoms, involving the entire body, may include: nausea or vomiting, excessive sweating, fever or chills, weakness, dizziness, or fainting, difficulty swallowing, numbness and tingling, especially in the mouth, altered mental state, generalized bleeding or hemorrhage, seizures, shock. […] What are the local symptoms of coral snake bites? Local symptoms may include: fang marks, minimal pain and swelling. […] What are the systematic symptoms of coral snake bites? Systemic symptoms may be delayed eight to 24 hours and may include the following: weakness or lethargy, numbness and tingling, altered mental state, flaccid muscles, paralysis, breathing problems.

• #79 Snake Bites | Boston Children’s Hospital

  https://www.childrenshospital.org/conditions/snake-bites

  What are the symptoms of pit viper bites? The following are the most common symptoms of pit viper bites. However, each child may experience symptoms differently. Local symptoms may include: bloody wound discharge, fang marks in the skin, swelling at the site of the bite which may progress to an entire extremity within hours, severe localized pain, burning and warmth, discoloration, such as redness and bruising, enlarged lymph nodes in the area. Systematic symptoms, involving the entire body, may include: nausea or vomiting, excessive sweating, fever or chills, weakness, dizziness, or fainting, difficulty swallowing, numbness and tingling, especially in the mouth, altered mental state, generalized bleeding or hemorrhage, seizures, shock. […] What are the local symptoms of coral snake bites? Local symptoms may include: fang marks, minimal pain and swelling. […] What are the systematic symptoms of coral snake bites? Systemic symptoms may be delayed eight to 24 hours and may include the following: weakness or lethargy, numbness and tingling, altered mental state, flaccid muscles, paralysis, breathing problems.

• #80 Snakebites – Injuries and Poisoning – Merck Manual Consumer Version

  https://www.merckmanuals.com/home/injuries-and-poisoning/bites-and-stings/snakebites

  Coral snakebites usually cause little or no immediate pain and swelling. More severe symptoms may take several hours to develop. The area around the bite may tingle, and nearby muscles may become weak. Muscle incoordination and severe general weakness may follow. Other symptoms may include double vision, blurred vision, confusion, drowsiness, increased saliva production, and speech and swallowing difficulties. Breathing problems, which may be extreme, may develop.

• #81 Snake Bites: Types, Symptoms, and Treatments

  https://www.healthline.com/health/snake-bites

  Water moccasin bites share symptoms with copperhead bites. Specific symptoms include: immediate pain and symptoms, change in skin color, shock, low blood pressure, weakness. […] Copperhead snake bites share symptoms with water moccasin snake bites. Symptoms can include: immediate pain and symptoms, change in skin color, shock, low blood pressure, weakness. […] Symptoms specific to coral snake bites include: pain that is not immediate, symptoms that set in hours after the bite, convulsions, drooping eyelids, change in skin color, stomach pain, difficulty swallowing, headache, shock, paralysis. […] The most important thing to do for a snake bite is to get emergency medical help as soon as possible. […] If the situation is life threatening, the doctor may administer antivenom. This is a substance created with snake venom to counter the snake bite symptoms. Its injected into the victim. The sooner the antivenom is used, the more effective it will be.

• #82 Clinical Features And Management Of Snake Bite

  https://pmc.ncbi.nlm.nih.gov/articles/PMC4925324/

  Sea snake venom contains myotoxins that cause myalgias, myopathy and rhabdomyolysis. Generalized aching, stiffness and tenderness of muscles develop 0.5 to 3.5 hours after the bite. Trismus is common. Myoglobinuria secondary to rhabdomyolysis appears 3 to 8 hours after the bite. […] Viper and elapid venom can cause direct myocardial damage manifesting as arrhythmias, bradycardia, tachycardia or hypotension. […] Renal failure is secondary to ischaemia in Viper bites (especially Russell’s viper). […] A variety of factors contribute to shock. They include fright, hypovolemia (due to extravasation of fluids and blood loss), myocardial depression, haemorrhage into the adrenals and pituitary and increased kinin production (as in Viper bite).

• #83 Clinical Features And Management Of Snake Bite

  https://pmc.ncbi.nlm.nih.gov/articles/PMC4925324/

  Sea snake venom contains myotoxins that cause myalgias, myopathy and rhabdomyolysis. Generalized aching, stiffness and tenderness of muscles develop 0.5 to 3.5 hours after the bite. Trismus is common. Myoglobinuria secondary to rhabdomyolysis appears 3 to 8 hours after the bite. […] Viper and elapid venom can cause direct myocardial damage manifesting as arrhythmias, bradycardia, tachycardia or hypotension. […] Renal failure is secondary to ischaemia in Viper bites (especially Russell’s viper). […] A variety of factors contribute to shock. They include fright, hypovolemia (due to extravasation of fluids and blood loss), myocardial depression, haemorrhage into the adrenals and pituitary and increased kinin production (as in Viper bite).

• #84 Clinical Features And Management Of Snake Bite

  https://pmc.ncbi.nlm.nih.gov/articles/PMC4925324/

  Local necrosis: In viper bites, bruising, blistering and necrosis may appear over few days following the bite. Necrosis is marked following bites of Asian pit vipers, and some rattlesnakes. Bites by Asian cobras can also cause tender local swelling and blistering. Krait bites usually do not cause any local reaction. Patients spat at by spitting elapids may develop venom ophthalmia. […] Even in patients with dry bites, symptoms like flushing, breathlessness, palpitations, and dizziness, tightness in the chest, sweating and acroparaesthesiae are common. These are due to anxiety and sympathetic overactivity. Apart from these, early symptoms in elapid bites include vomiting, heaviness of eyelids, blurring of vision, hypersalivation, congested conjunctivae and gooseflesh. In krait bites, cramping abdominal pain followed by diarrhoea and collapse may occur. Sea snake envenomation causes headache, a thick feeling of the tongue, thirst, sweating and vomiting. It is important to remember that nausea and vomiting are common symptoms of all severe envenomation.

• #85 Clinical Features And Management Of Snake Bite

  https://pmc.ncbi.nlm.nih.gov/articles/PMC4925324/

  Sea snake venom contains myotoxins that cause myalgias, myopathy and rhabdomyolysis. Generalized aching, stiffness and tenderness of muscles develop 0.5 to 3.5 hours after the bite. Trismus is common. Myoglobinuria secondary to rhabdomyolysis appears 3 to 8 hours after the bite. […] Viper and elapid venom can cause direct myocardial damage manifesting as arrhythmias, bradycardia, tachycardia or hypotension. […] Renal failure is secondary to ischaemia in Viper bites (especially Russell’s viper). […] A variety of factors contribute to shock. They include fright, hypovolemia (due to extravasation of fluids and blood loss), myocardial depression, haemorrhage into the adrenals and pituitary and increased kinin production (as in Viper bite).

• #86 Snake Bite: Symptoms, Causes, Treatment, and More

  https://www.health.com/snake-bite-8675316

  Symptoms of snake bites can vary, depending on the type of snake that bit you, where the bite occurred on the body, the size of the snake, the amount of venom injected, and whether the bite was venomous or non-venomous. Symptoms can also vary depending on factors such as age, height, and health. […] Common symptoms of a snake bite include: Severe pain, tenderness, and swelling […] Bleeding and fang marks on the skin […] Seizures […] Numbness and tingling […] Blurry vision […] A taste of metal, mint, or rubber in the mouth […] Muscle weakness or twitching […] Increased sweating or salivation […] Nausea and vomiting […] Diarrhea […] Rapid heart rate […] Difficulty breathing. […] Snake bites are serious or life-threatening injuries to the skin that can occur when you get bit by a venomous or non-venomous snake. Symptoms can sometimes take hours to appear, but it’s important to seek medical care immediately if you’ve been bitten. […] The sooner you get treatment for venomous snake bites, the lower your risk of experiencing complications. If you get bit, it’s essential to perform first aid on the bite and then request medical help by calling 911 or going to the nearest emergency room.

• #87 Clinical Features And Management Of Snake Bite

  https://pmc.ncbi.nlm.nih.gov/articles/PMC4925324/

  Snake venom may contain twenty or more toxins. Most of them are enzymes, non-enzyme peptide toxins and non-toxic proteins. The cobra and krait venoms are neurotoxic and cardiotoxic. Local effects are seen in the former but not in the latter. Viper venom is vasculotoxic and has severe necrotizing local effects. The neurotoxins of elapids and sea snakes are absorbed rapidly into the blood stream (therefore causing rapid systemic effects), whereas the much larger molecules of viper venom are taken up more slowly through the lymphatics (therefore causing severe local effects). Most venoms do not cross blood brain barrier. […] In at least 20% of pit viper bites and a greater percentage of elapid and sea snake bites, no venom is injected. […] Fang marks: Generally, the presence of two puncture wounds indicates a bite by a poisonous snake. In the case of a non-venomous snakebite, small puncture wounds are seen arranged in an arc.

• #88 Clinical Features And Management Of Snake Bite

  https://pmc.ncbi.nlm.nih.gov/articles/PMC4925324/

  Snake venom may contain twenty or more toxins. Most of them are enzymes, non-enzyme peptide toxins and non-toxic proteins. The cobra and krait venoms are neurotoxic and cardiotoxic. Local effects are seen in the former but not in the latter. Viper venom is vasculotoxic and has severe necrotizing local effects. The neurotoxins of elapids and sea snakes are absorbed rapidly into the blood stream (therefore causing rapid systemic effects), whereas the much larger molecules of viper venom are taken up more slowly through the lymphatics (therefore causing severe local effects). Most venoms do not cross blood brain barrier. […] In at least 20% of pit viper bites and a greater percentage of elapid and sea snake bites, no venom is injected. […] Fang marks: Generally, the presence of two puncture wounds indicates a bite by a poisonous snake. In the case of a non-venomous snakebite, small puncture wounds are seen arranged in an arc.

• #89 Snakebite Envenomization | VCA Animal Hospitals

  https://vcahospitals.com/know-your-pet/snakebite-envenomization

  Venomous snakebites are medical emergencies requiring immediate attention. […] Rattlesnake envenomization is immediately life threatening and prompt medical assistance must be sought. Coral snake bites are also life threatening and require immediate administration of appropriate antivenin. […] Treatment to counter shock, low blood pressure, infection and respiratory distress is necessary in most cases of venomous snakebites. […] The prognosis depends on several factors, including: the size and species of the snake; the amount of venom injected; the number of bites; the location and depth of the bite (bites to the head and body tend to be more severe than bites to the legs or paws); the age, size, and health of the dog; the time elapsed before treatment; and the dog’s individual susceptibility to the venom. […] The location of the bite is important. Swelling from bites around the muzzle and face can lead to breathing difficulties due to obstruction of the airway. […] Copperhead, cottonmouth, and coral snake envenomization cases have a better prognosis for complete recovery than rattlesnake bites.

• #90  

  https://www.saem.org/about-saem/academies-interest-groups-affiliates2/cdem/for-students/online-education/m4-curriculum/group-m4-environmental/snake-bites

  Coral snake envenomation may present with serious systemic toxicity with little findings at the actual site of envenomation due to the venoms lack of cytotoxicity. The neurologic abnormalities may include weakness, numbness, fasciculations, tremor, diplopia, bulbar palsies with slurred speech, dysphagia and respiratory paralysis (immediate cause of death). Ptosis is frequently the initial sign of toxicity. Coral snakes have the potential to cause high morbidity with respiratory failure, neurologic dysfunction and cardiovascular collapse, requiring airway and respiratory management lasting several weeks. Onset of clinical effects following envenomation occurs between one and seven hours but may be delayed up to eighteen hours. […] Because children have smaller body mass, smaller limbs, and less subcutaneous tissue, they can potentially receive more venom per kilogram body weight and therefore have more clinical severity than adults.

• #91

  https://www.who.int/news-room/fact-sheets/detail/snakebite-envenoming

  Bites by venomous snakes can cause paralysis that may prevent breathing, bleeding disorders that can lead to a fatal haemorrhage, irreversible kidney failure and tissue damage that can cause permanent disability and limb amputation. […] Bites by venomous snakes can cause acute medical emergencies involving severe paralysis that may prevent breathing, cause bleeding disorders that can lead to fatal haemorrhage, cause irreversible kidney failure and severe local tissue destruction that can cause permanent disability and limb amputation. […] Children may suffer more severe effects and can experience the effects more quickly than adults due to their smaller body mass.

• #92 Snake Bites: Types, Symptoms, and Treatments

  https://www.healthline.com/health/snake-bites

  The outlook for a person with a snake bite is highly variable. For a non-venomous snake bite, the outlook is excellent if the wound is cleaned and treated promptly. For a venomous bite, the outlook is good if the victim receives emergency care very soon after the bite has occurred. Healthy adults with shallow bites have a better outlook than children and those with weakened immune systems who have received deep bites.

• #93 How Long Does It Take for Snake Bite Symptoms to Show?

  https://www.awayclinic.com/post/how-long-does-it-take-for-snake-bite-symptoms-to-show

  It’s crucial to remember that these time frames are general estimates and can vary significantly depending on factors such as the type of snake, amount of venom injected, and the individual’s physical response. Some victims may experience rapid onset of severe symptoms, while others might have a more gradual progression. […] The CDC emphasizes that antivenom is the primary treatment for serious envenomation. The faster it’s administered, the more effectively it can prevent irreversible damage from the venom. This underscores the importance of understanding how long does it take for snake bite symptoms to show and seeking immediate medical attention, even if symptoms aren’t immediately apparent.

• #94 How Long Does It Take for Snake Bite Symptoms to Show?

  https://www.awayclinic.com/post/how-long-does-it-take-for-snake-bite-symptoms-to-show

  Snake bites are a serious concern for international travelers venturing into wilderness areas. One of the most critical questions that arise when discussing snake bites is: how long does it take for snake bite symptoms to show? […] The severity and speed at which symptoms appear largely depend on the type of snake venom injected. […] When it comes to understanding how long does it take for snake bite symptoms to show, it’s important to note that the onset can range from almost immediate to several hours after the bite occurs. […] In many cases, symptoms begin to manifest within 30 minutes to two hours. However, some bites may not show symptoms for up to 24 hours. […] The progression of symptoms typically follows this pattern: Immediate pain and swelling at the bite site (0-5 minutes), Gradual spread of swelling and discoloration (5-30 minutes), Nausea, vomiting, and dizziness (30 minutes – 2 hours), Difficulty breathing or swallowing (1-4 hours), Severe pain and tissue damage in the affected area (2-6 hours).

• #95

  https://www.battlbox.com/blogs/outdoors/understanding-how-long-after-a-snake-bite-symptoms-appear?srsltid=AfmBOorTX13LbVK7HjlKo5f8Kgr_yw0KxXfKfvQ193b0VlmA6K05p5-K

  The timeline for symptoms to appear after a snake bite can vary widely. Generally, heres what you can expect: […] Some individuals may experience immediate pain at the bite site. This can range from a slight sting to intense pain. […] In many cases, symptoms like swelling, redness, and bruising will begin to develop within this time frame. For example, pit viper bites often show these symptoms within 30 to 60 minutes. […] More severe symptoms may appear several hours after the bite, including nausea, vomiting, weakness, and difficulty breathing. The timing can depend on the amount of venom injected and the type of snake. […] In some cases, especially with certain types of snakes, symptoms may not appear for several hours or even days. This is particularly true with coral snake bites, where symptoms might take longer to manifest.

• #96 Snake bites – first aid, treatment and symptoms | healthdirect

  https://www.healthdirect.gov.au/snake-bites

  Rarely, some people have a severe allergic reaction to a snake bite. This is called anaphylaxis. […] Symptoms of anaphylaxis can include: difficult or noisy breathing, a swollen tongue, swelling or tightness in your throat, wheeze or persistent cough, difficulty talking or a hoarse voice, dizziness or collapse, being pale and floppy (young children).

• #97 Snake bites – first aid, treatment and symptoms | healthdirect

  https://www.healthdirect.gov.au/snake-bites

  Rarely, some people have a severe allergic reaction to a snake bite. This is called anaphylaxis. […] Symptoms of anaphylaxis can include: difficult or noisy breathing, a swollen tongue, swelling or tightness in your throat, wheeze or persistent cough, difficulty talking or a hoarse voice, dizziness or collapse, being pale and floppy (young children).

• #98 Snake bites – first aid, treatment and symptoms | healthdirect

  https://www.healthdirect.gov.au/snake-bites

  Rarely, some people have a severe allergic reaction to a snake bite. This is called anaphylaxis. […] Symptoms of anaphylaxis can include: difficult or noisy breathing, a swollen tongue, swelling or tightness in your throat, wheeze or persistent cough, difficulty talking or a hoarse voice, dizziness or collapse, being pale and floppy (young children).

• #99 Snake bites – first aid, treatment and symptoms | healthdirect

  https://www.healthdirect.gov.au/snake-bites

  Rarely, some people have a severe allergic reaction to a snake bite. This is called anaphylaxis. […] Symptoms of anaphylaxis can include: difficult or noisy breathing, a swollen tongue, swelling or tightness in your throat, wheeze or persistent cough, difficulty talking or a hoarse voice, dizziness or collapse, being pale and floppy (young children).

• #100 Snake bites – first aid, treatment and symptoms | healthdirect

  https://www.healthdirect.gov.au/snake-bites

  Rarely, some people have a severe allergic reaction to a snake bite. This is called anaphylaxis. […] Symptoms of anaphylaxis can include: difficult or noisy breathing, a swollen tongue, swelling or tightness in your throat, wheeze or persistent cough, difficulty talking or a hoarse voice, dizziness or collapse, being pale and floppy (young children).

• #101 Snake bites – first aid, treatment and symptoms | healthdirect

  https://www.healthdirect.gov.au/snake-bites

  Rarely, some people have a severe allergic reaction to a snake bite. This is called anaphylaxis. […] Symptoms of anaphylaxis can include: difficult or noisy breathing, a swollen tongue, swelling or tightness in your throat, wheeze or persistent cough, difficulty talking or a hoarse voice, dizziness or collapse, being pale and floppy (young children).

• #102 Rattlesnake bite: Symptoms, treatment, and more

  https://www.medicalnewstoday.com/articles/319159

  If a bite occurs, the area around the wound will swell up and change color. […] Rattlesnake bites are painful. Some immediate symptoms include: bleeding, difficulty breathing, blurry vision, eyelid drooping, low blood pressure, nausea and vomiting, numbness, paralysis, a rapid pulse, a change in skin color, swelling, tingling, tissue damage, thirst, fatigue, weakness, a weak pulse. […] Without prompt treatment, or if someone has an allergic reaction to the venom, rattlesnake bites can be fatal. […] Some people can have an allergic reaction to snake venom. This reaction is called anaphylaxis, or anaphylactic shock, and it can happen either immediately or several hours after a person gets bitten. […] Symptoms of shock include: faintness and collapsing, pale, cold, and clammy skin, sweating, rapid, shallow breath, blindness, nausea and vomiting, drowsiness or loss of consciousness.

• #103 Snake Bites: Types, Symptoms, and Treatments

  https://www.healthline.com/health/snake-bites

  The outlook for a person with a snake bite is highly variable. For a non-venomous snake bite, the outlook is excellent if the wound is cleaned and treated promptly. For a venomous bite, the outlook is good if the victim receives emergency care very soon after the bite has occurred. Healthy adults with shallow bites have a better outlook than children and those with weakened immune systems who have received deep bites.

• #104 Snakebite: Symptoms of a Pit Viper Bite Information

  https://www.columbiadoctors.org/health-library/article/snakebite-symptoms-pit-viper-bite/

  If a moderate amount of venom was injected, you are more likely to have severe pain, swelling of the whole limb, and general ill feelings, such as nausea, vomiting, and weakness. Swelling of the whole limb is an effect of the venom and can cause compartment syndrome. This is rare. […] Large amounts of venom usually cause severe pain and severe swelling. You may have trouble breathing, moderate to severe bleeding, and signs of shock after this type of bite. […] If venom is injected, about 35% are mild envenomations, 25% are moderate envenomations, and 10% to 15% are severe.

• #105 Snakebite (Snake Bite): Types, Symptoms, Medical Treatment

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

  Symptoms from these toxins are somewhat variable and may occur quickly within minutes or they may be delayed for hours, depending on the toxin type and the amount absorbed. […] Most snakebites, when quickly and appropriately treated, have a good prognosis. If left untreated for various increasing lengths of time after the snake bites, the prognosis usually diminishes while the complications increase. […] The complications of venomous snake bites can range from mild to severe and may mimic other human diseases like hemorrhagic fever, ALS (Amyotrophic Lateral Sclerosis), and autoimmune disease, for example. […] Complications include pain and swelling at the bite site, allergic reaction, vision damage (from toxin sprays especially), compartment syndrome (localized severe swelling that can damage or destroy nerves and blood vessels, leading to muscle necrosis), infection (including methicillin-resistant bacteria), limb loss, gangrene, sepsis, internal bleeding, cardiac damage, respiratory compromise, possible long-term psychological effects or mental disorders, and even death.

• #106 Venomous Snakes at Work | Outdoor | CDC

  https://www.cdc.gov/niosh/outdoor-workers/about/venomous-snakes.html

  Signs or symptoms of a snake bite can vary depending on the type of snake. […] Around the wound, you may experience: Puncture marks, Bleeding, redness, swelling, bruising, or blistering, Severe pain and tenderness. […] After a snake bite, you may experience: Nausea, vomiting, or diarrhea, Trouble seeing or breathing, In extreme cases, breathing may stop, Rapid heart rate, weak pulse, low blood pressure, Metallic, mint, or rubber taste in the mouth, Increased salivation and sweating, Numbness or tingling around face and/or limbs, Muscle twitching. […] Workers are more likely to suffer long-term injuries than to die from snake bites. For those bitten by rattlesnakes, 10-44 percent will have lasting injuries. For example, they may lose all or part of a finger or lose the ability to use it.

• #107 Clinical Features And Management Of Snake Bite

  https://pmc.ncbi.nlm.nih.gov/articles/PMC4925324/

  Sea snake venom contains myotoxins that cause myalgias, myopathy and rhabdomyolysis. Generalized aching, stiffness and tenderness of muscles develop 0.5 to 3.5 hours after the bite. Trismus is common. Myoglobinuria secondary to rhabdomyolysis appears 3 to 8 hours after the bite. […] Viper and elapid venom can cause direct myocardial damage manifesting as arrhythmias, bradycardia, tachycardia or hypotension. […] Renal failure is secondary to ischaemia in Viper bites (especially Russell’s viper). […] A variety of factors contribute to shock. They include fright, hypovolemia (due to extravasation of fluids and blood loss), myocardial depression, haemorrhage into the adrenals and pituitary and increased kinin production (as in Viper bite).

• #108 Snake Bites: Treatment & Prevention

  https://my.clevelandclinic.org/health/diseases/15647-snake-bites

  Symptoms of a snake bite vary based on what type of snake bit you. A nonvenomous snake can cause: […] Symptoms of a venomous snake bite include: […] Severe symptoms of a venomous snake bite include: […] A venomous snake bite is a medical emergency. Call 911 or your local emergency services number or visit the emergency room immediately if you experience any symptoms after a snake bite. […] The puncture of snake fangs (teeth) into your skin and the injection of snake venom causes a snake bite. Snake venom can seriously harm your body and cause death in some cases. The severity of the bite varies based on the type of snake that bit you. […] Complications from a snake bite could include: […] Pain and swelling are common long-lasting effects in the area of the body where the bite occurred. […] Your outlook after a snake bite varies based on what type of snake bit you and the amount of venom it injected into your body. If treated with antivenom quickly, you’ll have a more positive outlook. Untreated or delayed treatment of venomous snake bites is life-threatening and can lead to death.

• #109 Snakebite – Wikipedia

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

  Two puncture wounds, redness, swelling, severe pain at the area. […] This may result in redness, swelling, and severe pain at the area, which may take up to an hour to appear. […] The venom may cause bleeding, kidney failure, a severe allergic reaction, tissue death around the bite, or breathing problems. […] Symptoms may become more life-threatening over time, developing into hypotension, tachypnea, severe tachycardia, severe internal bleeding, altered sensorium, kidney failure, and respiratory failure. […] Some Australian elapids and most viper envenomations will cause coagulopathy, sometimes so severe that a person may bleed spontaneously from the mouth, nose, and even old, seemingly healed wounds. […] The venom of elapids, including sea snakes, kraits, cobras, king cobra, mambas, and many Australian species, contains toxins which attack the nervous system, causing neurotoxicity. […] Venom emitted from some types of cobras, almost all vipers, and some sea snakes cause necrosis of muscle tissue. […] Snakebite is also known to cause depression and post-traumatic stress disorder in a high proportion of people who survive.

• #110 Snake Bites: Types, Symptoms, and Treatments

  https://www.healthline.com/health/snake-bites

  Water moccasin bites share symptoms with copperhead bites. Specific symptoms include: immediate pain and symptoms, change in skin color, shock, low blood pressure, weakness. […] Copperhead snake bites share symptoms with water moccasin snake bites. Symptoms can include: immediate pain and symptoms, change in skin color, shock, low blood pressure, weakness. […] Symptoms specific to coral snake bites include: pain that is not immediate, symptoms that set in hours after the bite, convulsions, drooping eyelids, change in skin color, stomach pain, difficulty swallowing, headache, shock, paralysis. […] The most important thing to do for a snake bite is to get emergency medical help as soon as possible. […] If the situation is life threatening, the doctor may administer antivenom. This is a substance created with snake venom to counter the snake bite symptoms. Its injected into the victim. The sooner the antivenom is used, the more effective it will be.

• #111 Venomous Snakes at Work | Outdoor | CDC

  https://www.cdc.gov/niosh/outdoor-workers/about/venomous-snakes.html

  Antivenom is recommended for the treatment of signs of progressive envenomation (e.g., worsening of local tissue injury, systemic symptoms). […] If bitten, receiving antivenom as soon as possible helps limbs to recover faster and it lessens the chance that a limb will be disabled after copperhead snake envenomation.

• #112 Snake Bit! — Texas Parks & Wildlife Department

  https://tpwd.texas.gov/education/resources/texas-junior-naturalists/snakes-alive/snake-bit

  Incision and suction can actually increase the spread of venom. „Think of it this way,” said Dr. Andrew Price of the Texas Parks and Wildlife Department’s Resource Protection Division. „If a person is bitten by a pit viper and venom is injected, one of two possibilities exists. The bite may have hit a major arterial or venous blood vessel, in which case the venom already is being transported throughout the body. Or the venom is sitting in a tissue pocket, moving slowly through interstitial space: the tissue damage is localized and treatment can be localized. Cut into this pocket, and you run the risk of hitting a blood vessel and helping the venom spread faster.” […] Most experts today believe that the less first aid done before going to the hospital, the better off the patient will be. […] If the snakebite victim is less than an hour away from a hospital, most authorities agree on the following steps: 1.) Reassure the victim; keep him warm, quiet and comfortable. 2.) Remove rings and other constricting items. 3.) Loosely immobilize the injured part in a functional position and attempt to keep this part of the body just below heart level. 4.) Transport the victim to a medical facility quickly.

• #113 Snake bites

  https://www.nhs.uk/conditions/snake-bites/

  Most snake bites in the UK are not serious. But it’s important to get all snake bites checked as soon as possible. […] If you’ve been bitten by a snake, there are things you can do while you’re waiting for medical help. […] stay calm most snake bites in the UK are not serious and can be treated. […] You’ll usually need to stay in hospital for at least 24 hours if you’ve been bitten by a snake. […] The bite will be cleaned and bandaged. You may be given an injection to help protect you from tetanus. […] If you were bitten by a poisonous (venomous) snake you’ll be treated with a medicine to fight the venom. This is given through a thin tube into a vein, called a drip. […] The adder is the only poisonous (venomous) snake, but you should get all snake bites checked as soon as possible.

• #114

  https://www.zoetispetcare.com/blog/article/dog-snake-bites

  Treatments administered to treat snake bites can include: Intravenous (IV) fluids to address circulation problems and low blood pressure. IV fluids sometimes need to be given as a rapid infusion. Antibiotics to treat bacterial infection. Pain medications to control pain and discomfort. Antivenom to directly counteract the effects of venom. This can be critical in bites from some types of snake. Blood product transfusion to address blood clotting or significant bleeding resulting from the venoms effects.

• #115 Rattlesnake Bite: Symptoms, Treatment, and Recovery Timeline

  https://www.healthline.com/health/rattlesnake-bite

  If the bite is left untreated, your bodily functions will break down over a period of 2 or 3 days and the bite may result in severe organ damage or death. […] In some cases, people have become critically ill and taken months to recover following a rattlesnake bite. It’s possible to go into severe shock, which can lead to strokes. […] In some instances, people have lost a portion of their intestines due to restricted blood flow, and others have gone into kidney failure. These are side effects that were rarely seen in previous years. […] The outlook for a rattlesnake bite is good as long as you receive emergency care as soon as possible after the bite occurs.

• #116  

  https://www.saem.org/about-saem/academies-interest-groups-affiliates2/cdem/for-students/online-education/m4-curriculum/group-m4-environmental/snake-bites

  Coral snake envenomation may present with serious systemic toxicity with little findings at the actual site of envenomation due to the venoms lack of cytotoxicity. The neurologic abnormalities may include weakness, numbness, fasciculations, tremor, diplopia, bulbar palsies with slurred speech, dysphagia and respiratory paralysis (immediate cause of death). Ptosis is frequently the initial sign of toxicity. Coral snakes have the potential to cause high morbidity with respiratory failure, neurologic dysfunction and cardiovascular collapse, requiring airway and respiratory management lasting several weeks. Onset of clinical effects following envenomation occurs between one and seven hours but may be delayed up to eighteen hours. […] Because children have smaller body mass, smaller limbs, and less subcutaneous tissue, they can potentially receive more venom per kilogram body weight and therefore have more clinical severity than adults.

• #117

  https://www.stjohnwa.com.au/online-resources/first-aid-information-and-resources/snake-bite?srsltid=AfmBOoqS9Cg-VF6WYK7IK96LMopjx73cKYIFDD8G5F1k9YM4mwQuaC1D

  Snake bites are not common in Australia, but all should be treated as life threatening. The spread of snake venom depends on its absorption through the lymphatic system. […] Signs and symptoms may be visible in an hour or more after the person has been bitten. In children, signs and symptoms may appear within minutes. Paired fang marks, but often only a single mark or a scratch mark may be present. Marks or scratches may bleed. Nausea, vomiting and diarrhoea. Headache, drowsiness, giddiness or faintness. Double or blurred vision, drooping eyelids. Voice changes, trouble speaking or swallowing. Pain or tightness in the throat, chest or abdomen. Breathing difficulties, respiratory weakness or arrest.

• #118

  https://www.who.int/news-room/fact-sheets/detail/snakebite-envenoming

  Bites by venomous snakes can cause paralysis that may prevent breathing, bleeding disorders that can lead to a fatal haemorrhage, irreversible kidney failure and tissue damage that can cause permanent disability and limb amputation. […] Bites by venomous snakes can cause acute medical emergencies involving severe paralysis that may prevent breathing, cause bleeding disorders that can lead to fatal haemorrhage, cause irreversible kidney failure and severe local tissue destruction that can cause permanent disability and limb amputation. […] Children may suffer more severe effects and can experience the effects more quickly than adults due to their smaller body mass.

• #119 Snake bites factsheet | The Sydney Children’s Hospitals Network

  https://www.schn.health.nsw.gov.au/snake-bites-factsheet

  Some children may have severe allergic reactions to snake bites, known as anaphylaxis. […] Signs of anaphylaxis include: wheezing, difficult, or noisy breathing, swelling of the tongue, swelling or tightness in the throat, a persistent cough, difficulty talking or a hoarse voice, dizziness, becoming pale and floppy in young children, collapsing. […] Snake bites are life-threatening. If you suspect your child has been bitten, they must be checked and treated in a hospital. […] Snake bites are a medical emergency. […] Pressure bandaging prevents the venom from travelling further into the body. […] In the hospital, your child will have regular checks and blood tests to confirm if they were bitten by a venomous snake, monitor symptoms, make sure they are conscious and breathing well. […] Blood tests also help identify which anti-venom is needed. Anti-venom is a medication that can be injected into the bloodstream to stop the venom from working.

• #120 Snakebites | Loma Linda University Children’s Health

  https://lluch.org/conditions/snakebites

  Symptoms will vary depending on the type of snake, amount of venom injected, and size and general health of the snakebite victim. Symptoms may not appear right away. […] Symptoms at or near the bite may include: Fang marks in the skin, Swelling that may spread within hours, Severe pain, burning, and warmth, Redness and bruising, Swollen glands (enlarged lymph nodes). […] Symptoms affecting the body may include: Nausea or vomiting, A lot of sweating, Fever or chills, Weakness, dizziness, or fainting, Trouble swallowing, increased salivation or drooling, Numbness and tingling, especially in the mouth, Trouble breathing, Confusion and feeling anxious, Weakness.

• #121 Snake Bites: Types, Symptoms, and Treatments

  https://www.healthline.com/health/snake-bites

  Water moccasin bites share symptoms with copperhead bites. Specific symptoms include: immediate pain and symptoms, change in skin color, shock, low blood pressure, weakness. […] Copperhead snake bites share symptoms with water moccasin snake bites. Symptoms can include: immediate pain and symptoms, change in skin color, shock, low blood pressure, weakness. […] Symptoms specific to coral snake bites include: pain that is not immediate, symptoms that set in hours after the bite, convulsions, drooping eyelids, change in skin color, stomach pain, difficulty swallowing, headache, shock, paralysis. […] The most important thing to do for a snake bite is to get emergency medical help as soon as possible. […] If the situation is life threatening, the doctor may administer antivenom. This is a substance created with snake venom to counter the snake bite symptoms. Its injected into the victim. The sooner the antivenom is used, the more effective it will be.

• #122 Snake Bite: Symptoms, Causes, Treatment, and More

  https://www.health.com/snake-bite-8675316

  Symptoms of snake bites can vary, depending on the type of snake that bit you, where the bite occurred on the body, the size of the snake, the amount of venom injected, and whether the bite was venomous or non-venomous. Symptoms can also vary depending on factors such as age, height, and health. […] Common symptoms of a snake bite include: Severe pain, tenderness, and swelling […] Bleeding and fang marks on the skin […] Seizures […] Numbness and tingling […] Blurry vision […] A taste of metal, mint, or rubber in the mouth […] Muscle weakness or twitching […] Increased sweating or salivation […] Nausea and vomiting […] Diarrhea […] Rapid heart rate […] Difficulty breathing. […] Snake bites are serious or life-threatening injuries to the skin that can occur when you get bit by a venomous or non-venomous snake. Symptoms can sometimes take hours to appear, but it’s important to seek medical care immediately if you’ve been bitten. […] The sooner you get treatment for venomous snake bites, the lower your risk of experiencing complications. If you get bit, it’s essential to perform first aid on the bite and then request medical help by calling 911 or going to the nearest emergency room.

• #123 How Long Does It Take for Snake Bite Symptoms to Show?

  https://www.awayclinic.com/post/how-long-does-it-take-for-snake-bite-symptoms-to-show

  It’s crucial to remember that these time frames are general estimates and can vary significantly depending on factors such as the type of snake, amount of venom injected, and the individual’s physical response. Some victims may experience rapid onset of severe symptoms, while others might have a more gradual progression. […] The CDC emphasizes that antivenom is the primary treatment for serious envenomation. The faster it’s administered, the more effectively it can prevent irreversible damage from the venom. This underscores the importance of understanding how long does it take for snake bite symptoms to show and seeking immediate medical attention, even if symptoms aren’t immediately apparent.

• #124 Snake Bites: Types, Symptoms, and Treatments

  https://www.healthline.com/health/snake-bites

  The outlook for a person with a snake bite is highly variable. For a non-venomous snake bite, the outlook is excellent if the wound is cleaned and treated promptly. For a venomous bite, the outlook is good if the victim receives emergency care very soon after the bite has occurred. Healthy adults with shallow bites have a better outlook than children and those with weakened immune systems who have received deep bites.

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