Lumps behind the ear may be caused by many things. They are rarely serious, but you may need to see a doctor to determine the origin. Treatment will depend on the cause and may include antibiotics or ...

When cells clump together, they can form a cyst, a small sac that's filled with air, fluid, or something else. Sometimes, skin cells inside your ear can do this and cause a lump called a cholesteatoma ...

A lump behind the ear can have many potential causes, including acne, cysts, and infections. Swollen lymph nodes and certain cancers can also cause lumps. It is best to contact a doctor for advice if ...