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. Relative frequency of solitary melanocytic lesions of the oral mucosa Buchner 2004 Journal of Oral Pathology & Medicine Wiley Online Library Melanotic macules of the tongue in a newborn Journal of the American Academy of Dermatology Oral melanotic macule Stock Image C067 2476 Science Photo Library