Mystery behind labial and oral melanotic macules: Clinical, dermoscopic and pathological aspects of Laugier Hunziker syndrome 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 a Melanotic macule at the wetdry line of the lower lip. b Melanotic Download Scientific Diagram