| Snake and Lizard Bites
		
			| Snake and Lizard BitesSkip to the navigationTopic OverviewPoisonous snake or lizard bite A bite from a
		  poisonous (venomous) snake or lizard requires emergency care. If you have been
		  bitten by a snake or lizard that you know or think might be poisonous,
		  call 911 or other emergency services immediately. Do not wait for symptoms to
		  develop. If you are not sure what type of snake or lizard bit you,
		  call the Poison Control Center immediately to help
		  identify the snake or lizard and find out what to do next. Medicine to
		  counteract the effects of the poison (antivenom) can save a limb or your
		  life. It is important to stay calm.
		   Poisonous snakes or lizards found in North America include: Maine, Alaska, and Hawaii are the only states that don't
		  have at least one poisonous snake species in the wild. Poisonous snakebiteSymptoms of a pit viper snakebite often appear from minutes to hours after a bite. Severe
			 burning pain at the site usually begins within minutes, and then swelling
			 starts spreading out from the bite. Things that affect the
			 severity of a poisonous snake or lizard bite include the: Type and size of the snake or
				lizard.Amount of venom injected (if any).Potency of
				the venom injected.Location and depth of the
				bite.Number of bites and where they occurred on the
				body.Age, size, and
				health of the person who was bitten.
  If you do not develop symptoms within 8 to 12 hours, it
			 is possible that no venom was injected; this is called a dry bite. At least
			 25%, and perhaps up to 50%, of bites are dry. If poison is released in the bite,
			 about 35% of the bites have mild injections of poison (envenomations), 25% are
			 moderate, and 10% to 15% are severe. It is important to remember
			 that a snake only injects part of its venom with each bite, so it is still
			 dangerous after the first strike. A bite from a young snake can be serious. And
			 a dead snake, even one with a severed head, can still bite and release venom by
			 reflex action for up to 90 minutes after it dies. Even if you do not develop
			 symptoms within 8 hours, continue to watch for symptoms for 2 weeks or more. Nonpoisonous snake or lizard biteMost snakes and
		  lizards in North America are not poisonous. Bites may be frightening, but most
		  do not cause serious health problems. A bite from a small nonpoisonous snake
		  might leave teeth marks, a minor scrape, or a puncture wound without other
		  symptoms. Home treatment often relieves symptoms and helps prevent
		  infection. Although most nonpoisonous snakebites can be treated at
		  home, a bite from a large nonpoisonous snake (such as a boa constrictor,
		  python, or anaconda) can be more serious. In North America, these snakes are
		  found in the Florida Everglades and zoos, but they may also be kept as exotic pets. The force of the
		  bite can injure the skin, muscles, joints, or bones. Other problems can occur
		  with a nonpoisonous snake or lizard bite even if the reptile is small. A snake
		  or lizard's tooth may break off in a wound or a
		  skin infection may develop at the site of the
		  bite. Check your symptoms to decide if and when
		you should see a doctor.Check Your SymptomsDo you have a snake or lizard bite?How old are you? Less than 12 years Less than 12 years12 years or older 12 years or olderThis is more likely if you have had a bad reaction to something in the past. Yes Possible severe allergic reaction (anaphylaxis)No Possible severe allergic reaction (anaphylaxis)Do you have symptoms of shock?Are you having trouble breathing  (more than a stuffy nose)?Yes Difficulty breathing more than a stuffy noseNo Difficulty breathing more than a stuffy noseAre you having a severe reaction to the bite? In a severe reaction, you may have sudden, severe swelling and sudden numbness and tingling. Yes Severe reaction to biteNo Severe reaction to biteHas there been a decrease in how alert or aware you are or how well you can think and respond? Yes Decreased level of consciousnessNo Decreased level of consciousnessIs the bite from a snake or lizard that you know is poisonous or think may be poisonous? Yes Bite from known or suspected poisonous snake or lizardNo Bite from known or suspected poisonous snake or lizardIs there any numbness or tingling?Is the numbness or tingling near the bite or in the mouth, tongue, scalp, or feet? Yes Numbness or tingling near bite or in mouth, tongue, scalp, or feetNo Numbness or tingling near bite or in mouth, tongue, scalp, or feetDo you have numbness or tingling below the bite? Yes Numbness or tingling below biteNo Numbness or tingling below biteAre there any hives? Hives are raised, red, itchy patches of skin. They usually have red borders and pale centers. They may seem to move from place to place on the skin.Did the hives appear within the past 3 hours? Yes Hives appeared within past 3 hoursNo Hives appeared within past 3 hoursHow bad is the pain on a scale of 0 to 10, if 0 is no pain and 10 is the worst pain you can imagine? 8 to 10: Severe pain Severe pain5 to 7: Moderate pain Moderate pain1 to 4: Mild pain Mild painHas the pain lasted for more than 8 hours? Yes Pain for more than 8 hoursNo Pain for more than 8 hoursIs the pain getting worse?For an arm or leg wound, is the skin below the wound (farther down the limb) blue, pale, or cold to the touch and different from the other arm or leg? This may mean that a major blood vessel was damaged and that blood is not reaching the rest of the arm or leg.  Yes Skin is blue, pale, or cold below an arm or leg injuryNo Skin is blue, pale, or cold below an arm or leg injuryCan you move the area below the injury normally, even though it may hurt? Yes Able to move limb normally below injuryNo Unable to move limb normally below injuryAre you nauseated or vomiting? Nauseated means you feel sick to your stomach, like you are going to vomit.Are there red streaks leading away from the area or pus draining from it?Do you think you may have a fever?Do you have diabetes, a weakened immune system , peripheral arterial disease, or any surgical hardware in the area?"Hardware" includes things like artificial joints, plates or screws, catheters, and medicine pumps. Yes Diabetes, immune problems, peripheral arterial disease, or surgical hardware in affected areaNo Diabetes, immune problems, peripheral arterial disease, or surgical hardware in affected areaDo you think that a tooth from the snake or lizard may still be in the wound? Yes Snake or lizard tooth may still be in woundNo Snake or lizard tooth may still be in woundDo you still have symptoms more than 24 hours after the bite? Yes Symptoms more than 24 hours after biteNo Symptoms more than 24 hours after biteMany things can affect how your body responds to a symptom and what kind
	 of care you may need. These include: Your age. Babies and older
		adults tend to get sicker quicker.Your overall health. If you have a condition such as diabetes, HIV, cancer, or heart
		disease, you may need to pay closer attention to certain symptoms and seek care
		sooner.Medicines you take. Certain
		medicines, herbal remedies, and supplements can cause symptoms or make them
		worse.Recent health events, such as surgery
		or injury. These kinds of events can cause symptoms afterwards or make them
		more serious.Your health habits and lifestyle, such as eating and exercise habits, smoking, alcohol or drug
		use, sexual history, and travel. 
Try Home TreatmentYou have answered all the questions. Based on your answers, you may be
		able to take care of this problem at home. Try home treatment to relieve the
		  symptoms. Call your doctor if symptoms get worse or you have any
		  concerns (for example, if symptoms are not getting better as you would expect).
		  You may need care sooner.
Pain in adults and older children Severe pain (8 to 10): The pain
		is so bad that you can't stand it for more than a few hours, can't sleep, and
		can't do anything else except focus on the pain. Moderate pain (5 to 7): The pain is bad enough to disrupt your
		normal activities and your sleep, but you can tolerate it for hours or days.
		Moderate can also mean pain that comes and goes even if it's severe when it's
		there.Mild pain (1 to 4): You notice the pain,
		but it is not bad enough to disrupt your sleep or activities. 
Pain in children under 3 years It can be hard to tell how much pain a baby or toddler is in. Severe pain (8 to 10): The
		pain is so bad that the baby cannot sleep, cannot get comfortable, and cries
		constantly no matter what you do. The baby may kick, make fists, or
		grimace.Moderate pain (5 to 7): The baby is
		very fussy, clings to you a lot, and may have trouble sleeping but responds
		when you try to comfort him or her.Mild pain (1 to 4): The baby is a little fussy and clings to you a little but responds
		when you try to comfort him or her. 
Symptoms of infection may
	 include: Increased pain, swelling, warmth, or redness in or
		around the area.Red streaks leading from the area.
		Pus draining from the area. A fever.
Certain health conditions and medicines weaken the immune system's ability to fight off infection and
	 illness. Some examples in adults are: Diseases such as diabetes, cancer, heart disease,
		and HIV/AIDS.Long-term alcohol and drug
		problems.Steroid medicines, which may be used to treat a variety
		of conditions.Chemotherapy and radiation therapy for
		cancer.Other medicines used to treat autoimmune
		disease.Medicines taken after organ transplant.Not
		having a spleen.
Symptoms of a severe allergic reaction
	 (anaphylaxis) may include: The sudden appearance of raised, red areas (hives)
		all over the body.Rapid swelling of the throat, mouth, or tongue.Trouble
		breathing.Passing out (losing consciousness). Or you may feel very lightheaded or suddenly feel weak, confused,
or restless.
  A severe reaction can be life-threatening. If you have had a
	 bad allergic reaction to a substance before and are exposed to it again, treat
	 any symptoms as an emergency. Even if the symptoms are mild at first, they may
	 quickly become very severe.You may need a tetanus shot depending
	 on how dirty the wound is and how long it has been since your last shot. For a dirty wound that has
		things like dirt, saliva, or feces in it, you may need a shot if: 
		You haven't had a tetanus shot in the past 5
			 years. You don't know when your last shot was.
For a clean wound, you may
		need a shot if: 
		You have not had a tetanus shot in the past 10
			 years.You don't know when your last shot was.
Shock is a life-threatening condition that may quickly occur
	 after a sudden illness or injury.  Symptoms of shock (most of which will be present) include: Passing out (losing consciousness).Feeling very dizzy or
		lightheaded, like you may pass out.Feeling very weak or having
		trouble standing.Not feeling alert or able to think clearly. You
		may be confused, restless, fearful, or unable to respond to questions.
Shock is a life-threatening condition that may occur quickly
	 after a sudden illness or injury.  Symptoms of shock in a child may include: Passing out (losing consciousness).Being very sleepy or hard
		to wake up. Not responding when being touched or talked to.
		Breathing much faster than usual. Acting confused.
		The child may not know where he or she is. 
Symptoms of difficulty breathing can range from mild to severe. For example: You may feel a little out of breath but still be able to talk (mild difficulty breathing), or you may be so out of breath that you cannot talk at all (severe difficulty breathing).It may be getting hard to breathe with activity (mild difficulty breathing), or you may have to work very hard to breathe even when you’re at rest (severe difficulty breathing).
Seek Care TodayBased on your answers, you may need care soon. The
		problem probably will not get better without medical care.Call your doctor today to discuss the symptoms
		  and arrange for care.If you cannot reach your doctor or you don't
		  have one, seek care today.If it is evening, watch the symptoms and
		  seek care in the morning.If the symptoms get worse, seek care
		  sooner.
Seek Care NowBased on your answers, you may need care right away. The problem is likely to get worse without medical care.Call your doctor now to discuss the symptoms and
		  arrange for care.If you cannot reach your doctor or you don't have
		  one, seek care in the next hour.You do not need to call an
		  ambulance unless: 
		  You cannot travel safely either by driving
				yourself or by having someone else drive you.You are in an area
				where heavy traffic or other problems may slow you down.
Call  911  NowBased on your answers, you need
		emergency care.Call911or other emergency services now.Home TreatmentPoisonous snake or lizard biteIf you were bitten by
		  a snake or lizard that you know or think is poisonous, call 911 or other emergency services immediately. Do not wait for symptoms to develop.
		  Symptoms may progress from mild to severe rapidly. If you are not
		  sure what type of snake or lizard bit you, take a picture of it. But do not do
		  this if it will delay treatment or put someone at risk for more bites. Do
		  not waste time or take any risks trying to kill or bring in the snake. Only
		  trap a poisonous snake if the chances are good that it will bite more people if
		  you let it go. It is important to remember that a snake only injects part of
		  its venom with each bite, so it can still hurt you after the first strike. And
		  a dead snake, even one with a severed head, can bite and release venom by
		  reflex action for up to 90 minutes after it dies.
			  Medicine (antivenom) to counteract the effects of the poison can
		  save a limb or your life. Antivenom is given as soon as a doctor determines it
		  is needed, usually within the first 4 hours after the snakebite. Antivenom may
		  be effective up to 2 weeks or more after a snakebite. Immediate home treatmentImmediate home treatment
			 should not delay transport for emergency evaluation. If  you think the snake bite is an emergency, call  911.Remain calm and try to rest
				quietly.If you are not sure what type of snake or lizard bit you,
				call a Poison Control Center immediately to help
				identify the snake or lizard and find out what to do next.Remove any
				jewelry. The limbs might swell, making it harder to remove the jewelry
				after swelling begins.Use a pen to mark the edge of the swelling
				around the bite every 15 minutes. This will help your doctor estimate how the
				venom is moving in your body.
 Avoid these treatment measuresAvoid doing anything
			 that might cause more problems with the snake or lizard bite. Do not cut the bite
				open.Do not suck on the bite wound or use
				any kind of extraction device.Do not use a
				constriction band, such as a tourniquet or bandage, on a
				bite.Do not soak your hand or foot in ice
				water or pack your arm or leg in ice. This can increase damage to the skin and
				cause a cold-induced injury, such as frostbite.Do not raise the bitten arm or leg above your head. This may increase the
				flow of venom into the bloodstream.Do not drink alcohol.Do not give any
				prescription or nonprescription medicines after a poisonous snake or lizard
				bite unless your doctor tells you to. Some medicines, such as aspirin,
				ibuprofen, or naproxen, may cause increased bleeding.
 Nonpoisonous snake or lizard biteIf you are certain
		  the snake or lizard was not poisonous, use home treatment measures to reduce
		  symptoms and prevent infection.  Use direct pressure to stop any bleeding. Look at the wound to make sure a snake or
			 lizard tooth is not in the wound. If you can see a tooth, remove it with
			 tweezers, taking care to not push it farther into the wound.Clean
			 the bite as soon as possible to reduce the chance of infection, scarring, and
			 tattooing of the skin from dirt left in the wound. Wash the wound for 5 minutes
			 with large amounts of clean warm water.Do not use rubbing alcohol, hydrogen
			 peroxide, iodine, or Mercurochrome, which can harm the tissue and slow wound
			 healing.Soak the wound in warm water for 20 minutes, 2 to 4 times
			 a day, for the next 4 to 5 days. The warmth from the water will increase the
			 blood flow to the area, which helps reduce the chance of
			 infection.Puncture wounds usually heal well and may not need a
			 bandage. You may want to use a bandage if you think the bite will get dirty or
			 irritated. 
			 Clean the wound thoroughly and cover it with a thin layer of petroleum jelly, such as Vaseline, and a nonstick bandage.Apply a clean bandage when it gets wet or
				  soiled.
Determine whether you need a
			 tetanus shot.An
			 ice or cold pack may help reduce swelling and bruising. Never apply ice
			 directly to a wound or the skin. This could cause tissue damage.
 Medicine you can buy without a prescription| Try a nonprescription
				medicine to help treat your fever or pain: | 
|---|
 | Acetaminophen, such
					 as TylenolDo not use a nonsteroidal
					 anti-inflammatory drug, such as Advil, Motrin, Aleve, or aspirin.
 |  Safety tips| Be sure to follow
				  these safety tips when you use a nonprescription medicine: | 
|---|
 | Carefully read and follow all
						directions on the medicine bottle and box.Do not take more than
						the recommended dose.Do not take a medicine if you have had an
						allergic reaction to it in the past.If
						you have been told to avoid a medicine, call your doctor before you take
						it.If you are or could be pregnant, do not take any medicine other
						than acetaminophen unless your doctor has told you to.
 |  Symptoms to watch for during home treatmentCall your doctor if any of the following occur during home
		  treatment:PreventionSnakebites are more likely to occur in
		warm-weather months when both snakes and people are more active outdoors. Most
		snakebites occur on the fingers, hands, and arms when someone is working with
		or trying to catch a snake. The legs and feet are also common bite sites; these
		bites usually occur when a person (especially a child or a hiker) accidentally
		disturbs a snake. Snakes and lizards are popular exotic pets, so
		the risk for being bitten has increased. Many snake and lizard
		bites can be prevented. Find out what local snakes and lizards are found
		  in your area. Learn what they look like, whether they are poisonous, and where
		  you are most likely to see them.If you see a snake or lizard, do
		  not bother it. Keep in mind that the striking range of a snake is about
		  two-thirds of its length.Do not pick up or handle snakes. Even a
		  dead snake can bite and release venom through reflexes for 90 minutes or more
		  after it dies.Watch for snakes around wood or rock piles or caves.
		  Wear protective shoes, boots, and clothing when you are hiking, camping,
		  fishing, and hunting.Do not drink alcohol or use illegal drugs
		  while doing outdoor activities where you might encounter a snake. The effects
		  of the alcohol and drugs may slow your judgment and reflexes.If
		  you have a pet snake or lizard or are thinking about getting one, learn how to
		  handle it safely to avoid being bitten. Find out what first aid supplies you
		  will need if you are bitten, and have them handy.
 If you are often in an area where there are poisonous snakes,
		consider carrying a first aid kit. Carry a cellular phone, if you have one, to
		call for help if you are bitten.Preparing For Your AppointmentTo prepare for your appointment, see the topic Making the Most of Your Appointment. Questions to prepare for your appointmentYou can help your
		doctor diagnose and treat your condition by being prepared to answer the
		following questions: Do you know what type of snake or lizard bit you?
		  What did the snake or lizard look like? How big was the snake or lizard? Did it
		  rattle?When did the bite occur?Where were you
		  bitten?How many times were you bitten?What are your
		  main symptoms? How long have you had your symptoms?What home
		  treatment measures have you tried? Did they help? What
		  nonprescription medicines have you tried? Did they help?Have you
		  been treated for a snakebite in the past? If yes, what type of treatment did
		  you receive?What prescription and nonprescription medicine do you
		  take?How long ago was your last
		  tetanus shot?Do you have any
		  health risks?
CreditsByHealthwise StaffPrimary Medical ReviewerWilliam H. Blahd, Jr., MD, FACEP - Emergency Medicine
 Adam Husney, MD - Family Medicine
 Specialist Medical ReviewerSean P. Bush, MD, FACEP - Emergency Medicine, Envenomation Specialist
Current as ofMarch 20, 2017Current as of:
                March 20, 2017 Last modified on: 8 September 2017  |  |