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 Pigmented Oral Lesions: Clues to Identifying the Potentially Malignant Consultant360 Congenital Melanotic Macule of the Tongue: A Five Year Follow up Dermatology Practical & Conceptual Melanotic macules of the tongue in a newborn Journal of the American Academy of Dermatology Mucosal melanocytic macules