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Blepharitis - Overview

Alternative Names

Eyelid inflammation

Definition of Blepharitis:

Blepharitis is an inflammation of the eyelash follicles, along the edge of the eyelid. The cause is overgrowth of the bacteria that is normally found on the skin.

Causes, incidence, and risk factors:

Blepharitis is usually caused by seborrheic dermatitis or a bacterial infection, and sometimes it is a combination of both. Allergies and eyelash infestation with lice may also cause blepharitis, although these causes are less common.

This condition is characterized by excess oil production in the glands near the eyelid. Too much oil creates an environment where the normal bacteria found on the skin can overgrow. The eyelids appear red and irritated, with scales that cling to the base of the eyelashes.

Blepharitis may be connected to repeated styes and chalazia. Risk factors are seborrheic dermatitis of the face or scalp, rosacea, lice, and allergies.

Eye

Blepharitis

Reviewed last on: 7/17/2008
Linda Vorvick, MD, Seattle Site Coordinator, Maternal & Child Health Lecturer, Pathophysiology, MEDEX Northwest Division of Physician Assistant Studies, University of Washington School of Medicine. Also reviewed by David Zieve, MD, MHA, Medical Director, A.D.A.M., Inc.

References

Papier A, Tuttle DJ, Mahar TJ. Differential diagnosis of the swollen red eyelid. Am Fam Physician. 2007 Dec 15;76(12):1815-24.

Fay A. Diseases of the visual system. In: Goldman L, Ausiello D, eds. Cecil Medicine. 23rd ed. Philadelphia, PA: Saunders Elsevier; 2007: sect XXVI, chap 449.

Olitsky SE, Hug D, Smith LP. Abnormalities of the Lids. In: Kliegman RM, Behrman RE, Jenson HB, Stanton BF, eds. Nelson Textbook of Pediatrics. 18th Ed. Philadelphia, PA: Saunders Elsevier; 2007: chap 623.

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