What to do with pigmented oral lesions? 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 Melanocytic nevi and melanomas of the oral mucosa: detailed description of a case series Anais Brasileiros de Dermatologia Figure 3 from Oral Melanosis Semantic Scholar