Medically reviewed by Sameena Zahoor, MD Key Takeaways Most ant bites cause swelling, redness, and itching, but are not serious. Fire ant bites can cause a severe allergic reaction called anaphylaxis.

Fire ant stings are nasty. Lesions usually occur on the lower extremities after the disruption of a nest, causing a large number of ants to swarm and attack. The most common presentation is a wheal ...

If you live in a rural or suburban area in the Southern states, you’ve likely seen a fire ant hill a few times in your life. Stepping on a fire ant hill, sometimes referred to as a mound, can mean ...