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 Multiple pigmented lesions of the lower lip Journal of Oral and Maxillofacial Surgery Labial melanotic macule Pigmented Lesions of the Oral Cavity Oral and Maxillofacial Surgery Clinics Labial Melanotic Macules in Two Pediatric Patients of Chinese Descent With Atopic Dermatitis Katsiaunis 2025 Pediatric Dermatology Wiley Online Library