title: Oral Pathology Quiz #74. Case number 3. Frictional hyperkeratosis.
mesh_terms: D002610:Cheek; D003937:Diagnosis, Differential; D005260:Female; D017276:Friction; D006801:Humans; D007642:Keratosis / Q000473:pathology*; D008875:Middle Aged; D009059:Mouth Diseases / Q000473:pathology*; D009061:Mouth Mucosa / Q000473:pathology*