Skip navigation
MedlinePlus Trusted Health Information for You U.S. National Library of MedicineNational Institutes of Health
Contact Us FAQs Site Map About MedlinePlus
español Home Health Topics Drugs & Supplements Medical Encyclopedia Dictionary News Directories Other Resources

 

Medical Encyclopedia

Other encyclopedia topics:  A-Ag  Ah-Ap  Aq-Az  B-Bk  Bl-Bz  C-Cg  Ch-Co  Cp-Cz  D-Di  Dj-Dz  E-Ep  Eq-Ez  F  G  H-Hf  Hg-Hz  I-In  Io-Iz  J  K  L-Ln  Lo-Lz  M-Mf  Mg-Mz  N  O  P-Pl  Pm-Pz  Q  R  S-Sh  Si-Sp  Sq-Sz  T-Tn  To-Tz  U  V  W  X  Y  Z  0-9 

Snake bite

Printer-friendly versionEmail this page to a friend
Contents of this page:

Illustrations

Snake bite on the finger
Snake bite on the finger
Snake bite on the finger
Snake bite on the finger
Snake bite
Snake bite
Poisonous snakes - series
Poisonous snakes - series
Snakebite (poison) treatment - series
Snakebite (poison) treatment - series

Alternative Names    Return to top

Bites - snakes

Considerations    Return to top

Each year in the U.S., there are over 8,000 poisonous snakebites -- mostly in the summer season.

Poisonous snake bites are medical emergencies, and they can be deadly if not treated quickly. Children are at higher risk for death or serious complications because of their smaller body size. However, the right anti-venom can save a person's life. Getting the person to an emergency room as quickly as possible is very important. If properly treated, many snakebites will not have serious effects.

Causes    Return to top

Poisonous snake bites include bites by any of the following:

All snakes will bite when threatened or surprised, but most will usually avoid an encounter if possible and only bite as a last resort. Snakes found in and near water are frequently mistaken as being poisonous. Most species of snake are harmless and many bites will not be life-threatening, but unless you are absolutely sure that you know the species, treat it seriously.

Symptoms    Return to top

First Aid    Return to top

1. Keep the person calm, reassuring them that bites can be effectively treated in an emergency room. Restrict movement, and keep the affected area below heart level to reduce the flow of venom.

2. If you have a pump suction device (such as that made by Sawyer), follow the manufacturer's directions.

3. Remove any rings or constricting items because the affected area may swell. Create a loose splint to help restrict movement of the area.

4. If the area of the bite begins to swell and change color, the snake was probably poisonous.

5. Monitor the person's vital signs -- temperature, pulse, rate of breathing, and blood pressure  -- if possible. If there are signs of shock (such as paleness), lay the person flat, raise the feet about a foot, and cover the person with a blanket.

6. Get medical help immediately.

7. Bring in the dead snake only if this can be done safely. Do not waste time hunting for the snake, and do not risk another bite if it is not easy to kill the snake. Be careful of the head when transporting it -- a snake can actually bite for up to an hour after it's dead (from a reflex).

DO NOT    Return to top

When to Contact a Medical Professional    Return to top

Call for medical help if someone has been bitten by a snake. If possible, call ahead to the emergency room so that anti-venom can be ready when the person arrives.

Prevention    Return to top

Update Date: 5/15/2006

Updated by: Eric Perez, MD, Department of Emergency Medicine, St. Luke's-Roosevelt Hospital Center, New York, NY. Review provided by VeriMed Healthcare Network.

A.D.A.M. Logo

The information provided herein should not be used during any medical emergency or for the diagnosis or treatment of any medical condition. A licensed physician should be consulted for diagnosis and treatment of any and all medical conditions. Call 911 for all medical emergencies. Links to other sites are provided for information only -- they do not constitute endorsements of those other sites. Copyright 1997-2008, A.D.A.M., Inc. Any duplication or distribution of the information contained herein is strictly prohibited.