A localized circumscribed inflammatory swelling of one of several sebaceous glands of the eyelid, which is caused by a bacterial infection.
A stye is a small boil or abscess caused by an infection of one of the tiny oil-producing glands located at the base of each eyelash. A common condition, it may occur on either the upper or lower eyelid.
External styes are superficial and affect Zeis' glands or Glands of Moll at the edge of the lid. Internal styes involve the meibomian or tarsal glands under...