A case of black hairy tongue following the use of psychotropic agents

Abstract

Black hairy tongue is a benign skin condition characterized by dark brown or black patches on the tongue, due to hypertrophied filiform papillae. Although the cause of the disease is uncertain, there are several predisposing factors such as poor oral hygiene, smoking and medication. Herein, we report a case of black hairy tongue that developed after the use of psychotropic agents.