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 Melanotan 2 10mg Lux synth aminos Mucosal melanocytic macules Mucosal melanocytic macules Mystery behind labial and oral melanotic macules: Clinical, dermoscopic and pathological aspects of Laugier Hunziker syndrome