Pigmented Lesions of the Oral Cavity Pocket Dentistry 05 May 03 Eng Oral melanotic macule Stock Image C067 2476 Science Photo Library Cancer patient's tongue turned black and hairy 'after rare antibiotics reaction' The Independent 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 Black Hairy Tongue New England Journal of Medicine