Taint melanotic of the lip vaporization laser UNILASER MDICA a Melanotic macule at the wetdry line of the lower lip. b Melanotic 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 Labial melanotic macule Mystery behind labial and oral melanotic macules: Clinical, dermoscopic and pathological aspects of Laugier Hunziker syndrome