Blepharitis is inflammation of the eyelash follicles, along the edge of the eyelid.
Blepharitis is caused by an overgrowth of the bacteria that is normally found on the skin. It is usually due to seborrheic dermatitis or a bacterial infection. Both may occur at the same time.
The cause is overgrowth of the bacteria that is normally found on the skin.
People who have blepharitis have too much oil being produced by the glands near the eyelid. This allows bacteria normally found on the skin to overgrow.
Ganatra JB, Goldstein MH. Blepharitis. In: Yanoff M, Duker JS, eds. Ophthalmology. 3rd ed. St. Louis, Mo: Mosby Elsevier; 2008:chap 4.4.
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