Derm Dx: Dark Lesion on Lower Lip Clinical Advisor Oral pathology: Noting a pigmented macule that often presents a diagnostic dilemma Registered Dental Hygienists Dark Black Spot on Lip Dermatologist in Roorkee Oral Mucosal Melanosis IntechOpen 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 In the process of removing a Labial Melanotic Macule. A Labial Melanotic Macule is a well defined, oval, brown to black, flat patch on the central third of the lower lip, as seen