Not Cancer! Understanding Dark Spots in the Mouth, Have you noticed a dark spot on your lips, gums, or inside your mouth? Dont panic! In this video, Dr. Shifali Arora explains melanotic macules a 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 Derm Dx: Dark Lesion on Lower Lip Clinical Advisor Pigmented Oral Lesions: Clues to Identifying the Potentially Malignant Consultant360 Dental Update Malignant oral melanoma: how to spot it and how it is managed Dental Update