what causes benign cysts
Sebaceous cysts are the most common type of cysts seen in the ear. These sack-like lumps are made up of dead skin cells and oils produced by oil glands in the skin. The exact cause of the problem is unknown. Cysts may occur when oils are produced in a skin gland faster than they can be released from the gland. Benign bony tumors of the ear canal (exostoses and osteomas) are caused by excess growth of bone. Repeated exposure to cold water may increase the risk of benign bony tumors of the ear canal. The symptoms of cysts include: Pain (if cysts are in the outside ear canal or if they get infected)