Black and Brown: Non neoplastic Pigmentation of the Oral Mucosa Head and Neck Pathology Springer Nature Link Perioral Pigmentation One Area. Many Diagnoses. Dark skin around the mouth is one of the most common concerns I see in my OPD but it is never just tanning. Figure 1 from Oral Melanosis Semantic Scholar Dermatologic Look Alikes: Hyperpigmented Patches on Face and Neck Dermatology Advisor Smoker's melanosis Wikipedia