URL of this page: http://www.nlm.nih.gov/medlineplus/ency/imagepages/1909.htm

Black hairy tongue

Black hairy tongue

Overview

Black hairy tongue is produced when the papilla (finger-like projections from the surface of the tongue) fail to fall off as they normally do. As the length of the papilla increase, debris collects and bacteria grow, producing the characteristic dark "furry" appearance.

Update Date 3/22/2013