"Furunculus" is a medical term used to describe a boil or an abscess. There are several synonyms for this term, including "pustule," "pimple," "cyst," "abscess," and "carbuncle." These words are used interchangeably in medical literature when referring to skin infections that result in the formation of a swollen, inflamed mass. A furunculus can develop anywhere on the body where hair follicles are present, most commonly on the neck, face, and buttocks. Treatment for furunculosis usually involves antibiotics and warm compresses. If left untreated, furunculosis may result in further complications, such as cellulitis and sepsis. Early treatment can prevent a minor furunculus from turning into a severe infection.