Oral Mucosal Melanosis IntechOpen Pigmented Lesions of the Oral Mucosa Springer Nature Link An oral melanotic macule is a harmless dark spot found on the lip, most often the lower lip, or inside the mouth, either on the gums, inside the cheek, or on the roof of the mouth. An oral melanotic Oral Melanotic Macule: Symptoms and Treatment Skinsight Pigmented (Purple or Brown) Lesions in the Mouth Pigmented (Purple or Brown) Lesions in the Mouth Kazemi Oral Surgery Facialart.com