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 A melanocytic nevus (also known as a "Banal nevus," and "Nevocytic nevus") is a type of lesion that contains nevus cells Stock Photo Alamy Full article: Analysis of clinical and dermoscopic features in melanocytic lesions with special emphasis on problematic lesions in children Management of Melanocytic Lesions in the Primary Care Setting Mayo Clinic Proceedings