Solitary pigmentation of the tongue: lentigo simplex or pigmented fungiform papilla? Mystery behind labial and oral melanotic macules: Clinical, dermoscopic and pathological aspects of Laugier Hunziker syndrome Lingual melanotic macule the first case report in an adult patient* Anais Brasileiros de Dermatologia Relative frequency of solitary melanocytic lesions of the oral mucosa Buchner 2004 Journal of Oral Pathology & Medicine Wiley Online Library 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 What Caused These Multiple Hyperpigmented Macules of the Mouth?