What Caused These Multiple Hyperpigmented Macules of the Mouth? 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 Oral Malignant Melanoma Oral Cancer Foundation Information and Resources about Oral Head and Neck Cancer Melanotan II 10mg MC1R MC4R Melanocortin Peptide Melanotan II Results (With Before And After Pictures) The Tanning Drug