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 Labial Melanotic Macules in Atopic Dermatitis: An Observational Study Semantic Scholar Mystery behind labial and oral melanotic macules: Clinical, dermoscopic and pathological aspects of Laugier Hunziker syndrome A flat and oval shaped melanotic macule on the vermilion border of the Download Scientific Diagram Pathology Outlines Melanotic macule