Indian patient (mid 70s) with chief concern tongue is turning black. Swipe for more photos. These post inflammatory changes are more common in folks with more melanin in their skin. The underlying Pigmented lesions of the oral mucosa and perioral tissues: a flow chart for the diagnosis and some recommendations for the management ScienceDirect Black hairy tongue in an infant CMAJ Congenital Melanotic Macule of the Tongue: Report of Two Cases and Literature Review Head and Neck Pathology Springer Nature Link