Figure 225 from Pigmentations of the Oral Mucosa and Facial Skin Semantic Scholar oral melanotic macule Search Science Photo Library PT 141: The Libido Enhancing Peptide Vida Wellness Puerto Rico 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 Labial melanotic macule