Figure 225 from Pigmentations of the Oral Mucosa and Facial Skin Semantic Scholar PT 141: The Libido Enhancing Peptide Vida Wellness Puerto Rico PT 141 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 Melanotic Macules, Naevi, and Melanoma Springer Nature Link