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hairy leukoplakia
Hairy leukoplakia (also known as oral hairy leukoplakia, OHL, or HIV-associated hairy leukoplakia), is a white patch on the side of the tongue with a corrugated or hairy appearance. It is caused by Epstein-Barr virus (EBV) and occurs usually in persons who are immunocompromised, especially those with human immunodeficiency virus infection/acquired immunodeficiency syndrome (HIV/AIDS). This white lesion cannot be scraped off. The lesion itself is benign and does not require any treatment, although its appearance may have diagnostic and prognostic implications for the underlying condition.
Depending upon what definition of leukoplakia is used, hairy leukoplakia is sometimes considered a subtype of leukoplakia, or a distinct diagnosis.
==Classification==
In a classification of the oral lesions in HIV disease,〔EC Clearinghouse. Oral Problems Related to HIV Infection, revised classification.〕 OHL is grouped as "lesions strongly associated with HIV infection" (group I). It could also be classed as an opportunistic, viral disease. Hairy leukoplakia occurs on the tongue and has a similar name to hairy tongue, but these are separate conditions with different causes.
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