Oral Melanotic Macule MEDizzy Pigmented Oral Lesions: Clues to Identifying the Potentially Malignant Consultant360 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 Simple cryosurgical treatment of the oral melanotic macule ScienceDirect What Caused These Multiple Hyperpigmented Macules of the Mouth? Pigmented Lesions of the Oral Cavity Pocket Dentistry