Reviewed by the Evolve Health clinical team · 2026-09-30 · 1 min read
Red imported fire ants thrive across Texas, building their telltale fluffy mounds in lawns, parks, playgrounds, and fields. Disturb a mound and dozens of ants swarm up legs within seconds — each one stinging repeatedly.
What a sting looks like
Fire ant stings burn immediately, then typically form itchy white pustules within a day. Most people get a cluster of stings on the feet or legs. The pustules usually resolve on their own — try not to scratch or pop them, since broken skin can get infected.
Avoiding mounds
Watch where you step in grassy areas, especially after rain when mounds are rebuilt quickly. Closed shoes help. Teach kids to recognize the mounds and not to poke them with sticks — a classic Texas childhood mistake.
When to seek care
Most stings are a painful nuisance, but see a provider for signs of infection (increasing redness, warmth, swelling, or pus after the first day or two), stings near the eyes, or a large number of stings. Call 911 for any signs of a severe allergic reaction: trouble breathing, swelling of the face or throat, dizziness, or widespread hives.
Allergy note
Very few people are severely allergic to fire ant venom. If you've ever had a whole-body reaction to a sting, talk to a provider about an emergency plan before your next encounter.
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Evolve Health is at 2442 Lillian Miller Pkwy, Suite 115, Denton, TX 76205. Book online or call (940) 257-2002 to schedule a visit, in person or by video anywhere in Texas.
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