A white patch seen on the oral mucosa. It is considered a premalignant condition and is often tobacco-induced. When evidence of Epstein-Barr virus is present, the condition is called hairy leukoplakia (LEUKOPLAKIA, HAIRY).

Synonyms: Leukokeratosis, Oral, Oral Keratoses, Oral Leukokeratoses, Keratosis, Oral, Keratoses, Oral, Oral Leukokeratosis, Leukokeratoses, Oral, Leukoplakia, Oral, Leukoplakias, Oral, Oral Leukoplakia, Oral Leukoplakias, Oral Keratosis