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 macular lip lesion Clinical Advisor What Caused These Multiple Hyperpigmented Macules of the Mouth? Oral Mucosal Melanosis IntechOpen Dental Update Malignant oral melanoma: how to spot it and how it is managed Dental Update Mystery behind labial and oral melanotic macules: Clinical, dermoscopic and pathological aspects of Laugier Hunziker syndrome