Does anyone know what this black mark on my lip is? Started last August so it's I've had it nearly a year, was living in Spain at the time for 6 months What Caused These Multiple Hyperpigmented Macules of the Mouth? Oral melanoacanthoma and oral melanotic macule: a report of 8 cases, review of the literature, and immunohistochemical analysis Labial melanotic macule. B). Increased numbers of me lanocytes along Download Scientific Diagram