Oral Melanotic Macule: Symptoms and Treatment Skinsight A flat and oval shaped melanotic macule on the vermilion border of the Download Scientific Diagram 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 dermoscopy: A pigmented labial lesion Mystery behind labial and oral melanotic macules: Clinical, dermoscopic and pathological aspects of Laugier Hunziker syndrome Labial melanotic macules in atopic dermatitis. (a) Multiple macular Download Scientific Diagram