<unk>  is a white patch on the side of the tongue with a corrugated or<unk>  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). The white lesion, which cannot be scraped off, 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<unk>  is used,<unk>  is sometimes considered a subtype of<unk> , or a distinct diagnosis.
Hairy leukoplakia
Leukoplakia
Malakoplakia
Microspherophakia
Epikeratophakia
Erythroplakia
Polypill
Smokeless tobacco keratosis