Clinical Challenge: Dark Lesion on Lower Lip MPR An oral melanotic macule is a harmless dark spot found on the lip, most often the lower lip, or inside the mouth, either on the gums, inside the cheek, or on the roof of the mouth. An oral melanotic A cross sectional study of physiologic volar melanotic macules: Demographic, historical, clinical, and dermatoscopic features of a common yet neglected pigmentary variant in individuals with skin of color Journal of the American Mucosal Melanotic Macule Springer Nature Link