It’s critical to get immediate medical attention after a venomous snake bite. Call 911 or head to the nearest emergency room where hospital staff will administer antivenom. The sooner you receive this medicine, the less likely you will experience irreversible damage from the snake’s venom.
This article explains snake bite symptoms, diagnosis, treatment, and prevention.
Snake Bite Symptoms
Snake bite symptoms may vary depending on what type of snake bit you. However, some general symptoms accompany many snake bites.
General Symptoms
Snake bites can result in some common, general symptoms, including:
Puncture wounds from the bite Swelling, pain, or bruising Redness or darkening skin color Swollen lymph nodes Nausea or vomiting Sweating, fever, or chills Weakness, dizziness, or fainting Numbness Trouble breathing Confusion
Just as a person may be allergic to insect bites and stings, some people may also have an allergy to snake bites and venom. Keep an eye out for allergy symptoms, especially severe allergic reactions, like anaphylaxis.
Copperheads
Copperhead snakes are venomous and live in much of the U.S., primarily along the east coast and as far west as Texas. They are copper-tan in color and range from 2- to 4-feet long.
In addition to general symptoms, copperhead bites produce other notable symptoms, appearing minutes to hours after a bite. These include:
Pain Rapid swelling Bruising Trouble breathing Heart rhythm changes Metallic, rubbery, or minty taste Numbness or tingling sensation Lymph node swelling Shock
Rattlesnakes
Rattlesnakes are located all over the U.S., but they are prominently found in the southwest. They have large bodies and triangle-shaped heads. Their most distinctive feature is their tail, which contains a “rattle,” a series of scales that rattle when the snake shakes its tail. They range in size from 1- to 8-feet long.
Rattlesnake bite symptoms are the same as other venomous snake bite symptoms and include:
Severe pain Swelling Bruising Difficulty breathing Heart rhythm changes Metallic, rubbery, or minty taste Numbness or tingling Lymph node swelling Shock
Water Moccasins
The water moccasin is also called a cottonmouth snake. It is found in the southeast and the south-central U.S. They may be up to 6-feet long and have thick bodies. They have a triangular head and are dark brown to black.
Like other venomous snake bites, water moccasin bite symptoms include:
Severe, immediate painSwellingSkin discolorationRapid breathingHeart rate changesMetallic, rubbery, or minty tasteNumbness or tinglingLymph node swellingShock
Coral Snakes
Coral snakes live in the southern U.S. They are often confused with non-venomous milk snakes because they look similar. Coral snakes can be up to 3-feet long and have red, yellow, and black bands along the body.
Symptom of coral snake bites include:
Mild pain Weakness Numbness and tingling Increased salivation Drooling Slurred speech Nausea and vomiting
Diagnosing Snake Bites
It is crucial to identify what type of snake bite you have to receive proper treatment. Therefore, a healthcare provider will evaluate your symptoms and injury, including venom, if present, to determine a course of care.
Venomous
To diagnose venomous snake bites, a healthcare provider will examine your injury and assess the symptoms you are experiencing.
In addition, they may run a blood test called a 20 Minute Whole Blood Clotting Test (20WBCT). This test evaluates whether your blood clots as expected. If not, it indicates you need antivenom.
An antibody test may determine the type of venom in someone’s body. However, since the test can take several hours, this is most often done after you’ve received treatment.
Keep any clothing that may have a snake’s venom on it since it may help healthcare providers identify the type of snake that bit you.
Non-Venomous
Non-venomous snake bites are known as “dry bites.” While these bites can be extremely painful, once a healthcare provider evaluates them, they do not require antivenom.
If you are experiencing only localized symptoms, you may not need further tests. However, if there is any doubt, you may receive diagnostic tests noted above to rule out a venomous snake bite.
Snake Bite Treatment
If a snake bites you, treat the bite as though it could be venomous and seek medical attention right away. However, never attempt to drive yourself to the hospital, as you could become dizzy or lose consciousness.
While you wait for medical assistance to arrive, take the following steps:
If possible, have someone take a photo of the snake from a safe distanceStay calmSit or lie downRemove rings and other items that may get stuck if you swellWash the wound with soap and waterCover the bite with a bandage
In addition, you may want to mark the edge of the swelling so that you can see how or if the swelling increases over time.
For venomous snake bites, a healthcare provider will give you antivenom by injection or by intravenous (IV) infusion. Hospital staff will evaluate your wound and thoroughly clean it for dry bites. Often, no further treatment is required.
Common Treatment Misconceptions
You may have heard of some non-medical ways to treat snake bites. However, most often, non-medical treatment methods are unsafe.
Avoid the following:
Never try to kill, trap, or handle the snake. Get help immediately; don’t wait for symptoms. Do not apply a tourniquet. Do not cut the wound. Do not suck out the venom. Do not apply ice or soak the wound. Do not drink alcohol. Do not take pain relievers, including ibuprofen, aspirin, or naproxen. Do not use electric shock therapy or other folk methods.
Remember, snake bites—even dry bites—should always be treated as medical emergencies. That means you should never attempt to treat them on your own.
Snake Bite Prevention
If you are going to be outside in places where venomous snakes live, it’s a good idea to take some precautions. These include:
Wear boots and long pants when hiking. Stay on trails. Stay away from long grasses and brush where snakes like to hide. Never touch or disturb a snake. Look carefully before disturbing rocks or other debris. Always hike with someone.
In addition, keep pets leashed while on walks and teach kids to always leave snakes alone.
Summary
Snake bites may be venomous or “dry” (non-venomous). All snake bites produce pain, swelling, and puncture wounds. In addition, venomous snake bites can result in neurological symptoms, including a metallic taste, dizziness, heart rhythm changes, tingling, and trouble breathing. Even if you think you know the snake that bit you is non-venomous, you should treat every snake bite as a medical emergency and seek help right away.
A Word From Verywell
If you are bitten by a snake, feeling panicked is normal. Even so, it’s essential to stay calm. So, take some deep breaths and call 911. Never wait to see if symptoms get worse before seeking care, and never attempt to treat a snake bite on your own. While you wait for medical attention, sit or lie down and ask someone to wash your wound and bandage it. Take heart that when people receive medical attention promptly, snake bites are rarely fatal.
