Pilonidal sinus—also called a pilonidal cyst—is a skin infection that occurs in or around the crease of your buttocks. This condition happens when hair, skin cells, and dirt clog a hair follicle, ...

Skin cysts, or sebaceous cysts, are slightly hardened, fluid-filled bumps under the skin. When a person feels them, they are moveable. They often affect the face, neck, and torso. The term “sebaceous ...

An infected nose piercing may cause pain, pus, and an abnormal odor at the piercing site. You can use home remedies like a sea salt solution or a warm compress to combat the infection. To prevent ...

A staph infection in the nose can result in swelling, bleeding, and crusting, among other symptoms. Treatment typically involves antibiotics prescribed by a doctor. A staph infection is a bacterial ...

A cyst is a sac or cavity that may be filled with pus, semi-solid material, or air. It doesn’t usually cause pain until it gets large. An abscess is a painful, red infection that’s filled with pus. A ...

Boils and cysts are two types of growths on the body. Also known as furuncles, boils are pockets of pus (a creamy, white substance) on the skin caused by bacteria infecting hair follicles.

A 27-year-old man will have a scar on his face for the rest of his life, after what he thought was a pimple turned out to be an infected cyst. In late 2024, Kai Davidson noticed a small lump on the ...