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Blepharitis

Blepharitis
Infant with blepharitis on the right side.jpg
An infant with mild blepharitis on his right side
Classification and external resources
Specialty Ophthalmology
ICD-10 H01.0
ICD-9-CM 373.0
DiseasesDB 1455
MedlinePlus 001619
eMedicine oph/81
Patient UK Blepharitis
MeSH D001762
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Blepharitis (/blɛfəˈrts/ BLEF-ər-EYE-tis) is a common eye condition characterized by chronic inflammation of the eyelid, resulting in inflamed, irritated, itchy, and reddened eyelids. A number of diseases and conditions can lead to blepharitis. It can be caused by the oil glands at the base of the eyelashes becoming clogged, a bacterial infection, allergies, or other conditions. The severity and course can vary. Onset can be acute, resolving without treatment within 2–4 weeks (this can be greatly reduced with lid hygiene), but more generally is a long-standing chronic inflammation of varying severity.

It may be classified as seborrhoeic, staphylococcal, mixed, posterior or meibomitis, or parasitic. It usually does not cause permanent damage.

Blepharitis is characterized by chronic inflammation of the eyelid, usually at the base of the eyelashes. This results in inflamed, irritated, itchy, and reddened eyelids.

It is typically caused by bacterial infection or blockage of the eyelid's oil glands, although sometimes it is caused by allergies. Various diseases and conditions can lead to blepharitis, such as rosacea, herpes simplex dermatitis, varicella-zoster dermatitis, molluscum contagiosum, allergic dermatitis, contact dermatitis, seborrheic dermatitis, staphylococcal dermatitis, and parasitic infections (e.g., Demodex and Phthiriasis palpebrarum).


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