Labial Melanotic Macules DoveMed Melanotic Macules, Naevi, and Melanoma Springer Nature Link 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. Dark Patches Inside Mouth: 7 Alarming Causes Liv Hospital A collection of resources for RACGP exams Next Gen GP Text Book live webinars AKT and KFP questions