Fire ants can deliver a painful bite. The workers are very aggressive when they are defending the nest. People often walk over fire ant nests without realizing they have done it. A crowd of ants runs up the person's foot and then they all seem to bite at the same time. The bites surprise the victim and they are very painful.
Besides the painful bites, fire ants can deliver a fierce sting. They hold on with their mandibles (jaws), and sting over and over. Most people get a small blister at the spot of each sting. The blisters can become infected, but the biggest risk is allergic reaction to the fire ant venom.
People often step on fire ant mounds accidentally. Fire ant stings often happen to people who are doing yard work. Children and pets often stand or sit on fire ant mounds before they realize the danger. People also receive stings when they trip and fall onto fire ant mounds.
If fire ants sting a person, they can keep stinging until they have emptied their venom sac. It is important to brush the ants off of the victim as quickly as possible. Try to keep the victim calm. If there were a large number of stings, it may help to elevate the affected part of the body.
Skin creams that are labeled “anti-itch” or “hydrocortisone” can help with the discomfort of the stings. People who are sensitive to insect venom may also need an antihistamine.
There are a variety of symptoms of anaphylaxis or allergic reaction. The symptoms can include skin rash, swelling, headache, dizziness, nausea, or even unconsciousness. If fire ants sting a person, he or she should be observed closely. If there are signs of allergic reaction, a medical professional should be consulted. A person who has a medical condition should also consult a doctor if fire ants sting him or her.