Simple cryosurgical treatment of the oral melanotic macule ScienceDirect 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 Congenital Melanotic Macules of the Tongue The Journal of Pediatrics Cancer patient's tongue turned black and hairy 'after rare antibiotics reaction' The Independent