What is a carbuncle? A carbuncle is a connected group of boils that stem from an infection of the skin. “They are sometimes confused for a spider bite,” said Dr. Allison Arthur, a dermatologist and ...

Boils form from infected hair follicles. They can start as small, red bumps and turn into hard lumps under your skin that secrete pus. They usually go away on their own, but can reoccur. A boil is a ...