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 Amelanotic Melanoma: Symptoms, Outlook, and Treatment Melanocytic Naevus Ballarat Skin Cancer Centre Pigmented Lesions of the Oral Mucosa: Clinical Presentation, Histology, and Recommendations for Management American Journal of Clinical Dermatology Springer Nature Link Maturity Melanosis Causes & Symptoms Pigmentation Treatment FMS Skin & Hair Clinics Riehl Melanosis MD Searchlight