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 ...

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, ...

Learn about Bartholin’s cyst, Bartholin duct cyst causes, symptoms, diagnosis, and treatment options. Understand signs and ...

A branchial cleft is also called a cleft sinus. It is a lump or cyst that develops in your neck or near your collarbone. It develops in the womb before birth and is usually diagnosed shortly after ...