Fire ant bites are best treated by first washing the area of the bite, applying a cold compress and subsequently applying a hydrocortisone ointment or using antihistamines, according to Healthline. It is best to do this as soon as a bite is noticed.
It is important not to open the blister that forms after the bite, as this can create an area susceptible to infection. It is also important to note whether shortness of breath is experienced, if there is throat swelling or any tightness in the chest, as this may indicate an allergic reaction. At that point, it is necessary to seek medical assistance, states Healthline.