Blepharitis is an inflammation of the eyelid. It develops at the place where the mucous membrane on the underside of the lid joins the skin on the top of the lid. It occurs in both children and adults. The condition can be chronic and recur.
The margin of the lid becomes inflamed along the eyelash line. Redness, scaling, and sometimes an infection can develop in the skin between the eyelashes.
The condition can be brought on by seborrhea. This is a dandruff-like condition that can appear wherever there is hair on the body. It can occur at the root of the eyelashes. Blepharitis can also be aggravated by a bacterial infection. Staphylococcus is the most common cause.