An abscess occurs when an infection causes a pocket of pus to develop. Abscesses can develop on the skin, in the mouth, or inside the body. Bacterial infections typically cause abscesses. Pus develops ...

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 ...

An anal abscess, also known as a perianal or rectal abscess, occurs when a cavity in the anus becomes filled with pus. Symptoms may include pain, constipation, or fever. Treatment may include drainage ...