Furuncle / boil

A painful nodule formed in the skin by circumscribed inflammation of the dermis and subcutaneous tissue, enclosing a central slough or “core.” Called also furuncle. Boils occur most frequently on the neck and buttocks, although they may develop wherever friction or irritation, or a scratch or break in the skin, allows the bacteria resident on the surface to penetrate the outer layer of the skin. A carbuncle is a group of interconnected boils arising in a cluster of hair follicles.

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