Fire Ant Sting Treatment: Immediate First Aid, Allergy Signs & Prevention

Fire ant stings cause immediate burning pain followed by itchy pustules. Most reactions are local, but some people develop severe, life-threatening allergic responses.

Immediate First Aid

1. Move away from the mound immediately.
2. Brush off ants—don't crush them on skin (releases more venom).
3. Wash area with soap and water.
4. Cold compress (ice pack wrapped in cloth) 10–15 minutes to reduce swelling and pain.
5. Elevate affected limb if possible.
6. OTC relief: Oral antihistamine (cetirizine), topical hydrocortisone 1%, ibuprofen/acetaminophen for pain.
7. Don't pop pustules—they're sterile; popping invites infection.
8. Monitor for infection: Increasing redness, warmth, pus, red streaks, fever → see a doctor.

Severe Allergic Reaction (Anaphylaxis) – Call 911

• Difficulty breathing, wheezing, throat tightness
• Swelling of lips, tongue, face
• Dizziness, fainting, rapid weak pulse
• Widespread hives, nausea/vomiting
• Use epinephrine auto-injector if prescribed.

Prevention

• Avoid visible mounds; wear closed-toe shoes, socks, long pants in infested areas.
• Apply insect repellent to feet/legs (DEET/picaridin).
• Treat yard with bait-based fire ant control (spring/fall).
• If allergic: carry epinephrine, wear medical alert ID, consider venom immunotherapy (highly effective).

Fire ants inject alkaloid venom (no stinger left behind). The pustule is a sterile reaction to the venom, not an infection.