Congenital Melanotic Macule of the Tongue: A Five Year Follow up Dermatology Practical & Conceptual Smoker? These brown patches might NOT be dangerous Most dental students confuse this condition Smoker's melanosis is a common oral finding caused by increased melanin production due to tobacco exposure Oral melanotic macule Stock Image C067 2477 Science Photo Library Lingual melanotic macule the first case report in an adult patient* Anais Brasileiros de Dermatologia 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 Melanotic Macule: Symptoms and Treatment Skinsight