Rattlesnake Bites

While rarely fatal, rattlesnake bites can be extremely painful and cause serious tissue damage if not treated quickly. At Banner Health, our emergency and trauma teams are experienced in treating venomous bites and providing the fast, specialized care you need. 

If you or someone you’re with is bitten by a rattlesnake, call 911 immediately or go to your nearest Banner Emergency Department. 

Find an emergency room near you. 

Rattlesnakes in Arizona: what to know 

Arizona is home to more than a dozen species of rattlesnakes, and encounters are common in warm months. Here’s what to keep in mind: 

• Rattlesnakes become more active once daytime temperatures rise above the low 80s°F. 
• They can be seen year-round but are most active from March through October, especially in spring when they seek warmth. 
• During summer heat, rattlesnakes are more active at night. 
• After the August monsoon rains, they’re often at their peak activity. 
• The rattle usually serves as a warning - but not always. Rattlesnakes can strike without rattling or warning sounds. 
• They can strike up to half their body length, depending on species and situation. 
• Baby rattlesnakes, typically born in late summer, are venomous from birth and can bite just like adults. 

Always stay alert when hiking, gardening or walking pets in snake-prone areas, especially during warmer months. 

Symptoms of a rattlesnake bite 

Seek emergency care right away if you notice any of the following after a suspected snakebite: 

• Sharp, burning pain at the bite site (fang marks may be visible) 
• Rapid swelling or redness spreading from the bite 
• A metallic or rubbery taste in the mouth 
• Weakness, sweating, chills or dizziness 
• Nausea or vomiting 

Even if symptoms appear mild, do not delay medical care - venom can cause progressive tissue damage and systemic effects within hours. 

What to do if bitten by a rattlesnake 

1. Call 911 immediately or have someone drive you to the nearest emergency department. 
2. Stay calm and as still as possible to help slow the spread of venom. 
3. Keep the bite area below heart level, if safely possible. 
4. Remove rings, watches or tight clothing near the bite site before swelling begins. 
5. Use your cell phone to call for help if you’re in a remote area. 

You have time to reach emergency care - remaining calm and minimizing movement helps improve outcomes. 

What not to do after a snakebite 

• Do not apply ice or immerse the bite in cold water. 
• Do not cut the wound or try to suck out the venom. 
• Do not use a tourniquet or tight band that cuts off circulation. 
• Do not attempt to capture or kill the snake - treatment is not species-specific, and this increases your risk of another bite. 

When to call for help 

If you have questions about a bite or potential venom exposure: 

• Call the Banner Poison and Drug Information Center at 602-253-3334 
• Or reach the Poison Help line at 800-222-1222 

If you suspect a life-threatening emergency, call 911 immediately. 

Why choose Banner Health for rattlesnake bite treatment 

Banner Health emergency departments across Arizona are equipped to handle venomous bites and stings with: 

• Antivenom therapy and expert emergency care 
• Rapid evaluation and monitoring for swelling, pain and allergic reactions 
• Pain management and supportive treatment for complications 
• 24/7 access to emergency medicine specialists trained in snakebite management 

Our hospitals across Arizona are staffed and ready to deliver prompt, effective treatment when every minute matters. 

Find your nearest Banner emergency location. 

Tips for preventing rattlesnake bites 

• Stay on designated trails and avoid tall grass or rocky crevices. 
• Watch where you place your hands and feet, especially when climbing or gardening. 
• Don’t step or reach into areas you can’t see. 
• Keep dogs on a leash when hiking. 
• Avoid handling or approaching snakes, even if they appear dead. 
• Wear boots and long pants when walking in desert or brush areas.