A condition characterised by hyperkeratosis of darkened, hyperplastic filiform papillae on the dorsum of the tongue with secondary hemosiderin deposition. Black hairy tongue is anterior to the circumvallate papillae, due to prolonged antibiotic therapy, resulting in overgrowth of chromogenic bacteria, or related to food, coffee, or tobacco or oral bismuth therapy
Management Brush tongue with a toothbrush
Segen's Medical Dictionary. © 2012 Farlex, Inc. All rights reserved.