ORAL MELANOTIC MACULE (OMM) (Also called focal melanosis labial melanotic macule) A benign, localized, flat pigmented lesion of the oral mucosa Caused by a focal increase in melanin production Acquired melanosis with hypertrichosis and intralesional acne in a 21 year old male patient: A treatment strategy Pigmented Lesions of the Oral Cavity Oral and Maxillofacial Surgery Clinics Melanotic Macules, Naevi, and Melanoma Springer Nature Link