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 Pigmented (Purple or Brown) Lesions in the Mouth Pigmented (Purple or Brown) Lesions in the Mouth Kazemi Oral Surgery Facialart.com Differential diagnosis of an oral mucosal pigmented lesion: a case of essential melanosis Oral melanoacanthoma and oral melanotic macule: a report of 8 cases, review of the literature, and immunohistochemical analysis Figure 2 from Oral pigmentation Semantic Scholar