Pigmentation of the hard palate Oral Surgery, Oral Medicine, Oral Pathology, Oral Radiology and Endodontics A collection of resources for RACGP exams Next Gen GP Text Book live webinars AKT and KFP questions Oral Melanotic Macule: Symptoms and Treatment Skinsight 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.