Epidermoid cysts, also called sebaceous cysts or skin cysts, are benign (non- cancerous) skin cysts formed by an outpouching from the hair follicle.
In general, epidermoid or skin cysts have a round appearance. A dark portion of the cyst is visible on the skin. If the cysts become infected, they will become red and tender. When the cysts are squeezed, they can produce a cheesy white discharge.
The effective treatment of epidermoid cysts requires that the sac of the cyst be completely removed surgically under local anesthesia. If the cyst is squeezed and the discharge is forced out without removing the sac, the cyst will return. Antibiotics may be prescribed to treat infected cysts.