Dental Update Malignant oral melanoma: how to spot it and how it is managed Dental Update Labial lentigines, also called labial melanotic macules, is a benign skin condition that is more common in individuals with darker skin. They most often appear during adulthood although they can develop at Labial Macules: Dark Spots on the Lip Dermatology Advisor Can a black pigmented lesion of the oral cavity : Journal of Family Medicine and Primary Care Pigmented Lesions of the Oral Mucosa Springer Nature Link