Stye: Stye is an infection of the sebaceous gland of the eyelid caused by bacteria. The infection normally takes place at the root of an eyelash. The bacterial infection causes a painful bump on the eyelid.
Chalazion: Chalazion results from the blockage in a meibomian gland in the eyelid. This blockage leads to bacterial infection. Chalazion occurs on the inside of the eyelid. It usually follows stye and is painful.
Conjunctivitis: Blepharitis can trigger frequent conjunctivitis.
Dry Eyes and Excess Tearing: Tear film, which performs lubrication of the eye, is an important part of eyelid. Abnormal oil secretion and accumulation of different type of debris hampers with the proper function of it. Sometimes this leads to excessive tearing and dry eyes.
Injury to Other Parts of the Eye: Irritation from blepharitis might hamper with cornea and other parts of the eye.