Differences among Dermoscopic Findings in Riehl's Melanosis of the Cheek and Neck Mucosal melanocytic macules 05 May 03 Eng What is Hyperpigmentation? 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 Differential Diagnosis of Pigmented Lesions in the Oral Mucosa: A Clinical Based Overview and Narrative Review