A boil, also known as a furuncle, is a swollen, pus-filled growth on the skin that occurs when bacteria—even those normally found on your body—infect a group of hair follicles. Boils commonly develop ...

Boils, also known as furuncles, are painful, red, pus-filled bumps that form on the skin, usually around hair follicles or oil glands. They are typically caused by a bacterial infection, most often by ...