Epidermoid Cyst: After Your Visit
An epidermoid (say "eh-pih-DER-moyd") cyst is a lump just under the skin. These cysts can form when a hair follicle becomes blocked. They are common in acne and may occur on the face, neck, back, and genitals. However, they can form anywhere on the body. These cysts are not cancer and do not lead to cancer. They tend not to hurt, but they can sometimes become swollen and painful. They also may break open (rupture) and cause scarring.
These cysts sometimes do not cause problems and may not need treatment. If you have a cyst that is swollen and hurts, your doctor may inject it with a medicine to help it heal. But it is more likely that a painful cyst will need to be removed. Your doctor will give you a shot of numbing medicine and cut into the cyst to drain it or remove it. This makes the symptoms go away.