Labial Melanotic Macules in Atopic Dermatitis: An Observational Study Semantic Scholar Brown spots, especially on the lips, can be alarming to some. In some instances it can indicate rare oral mucosal melanoma, however in this case it was a non cancerous labial melanotic macule. COM March 2009 Diagnosis UW School of Dentistry Melanotic macules of the tongue in a newborn Journal of the American Academy of Dermatology Pigmentation Document Gale OneFile: Health and Medicine Oral Melanotic Macule: Symptoms and Treatment Skinsight