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 melanotic macule Stock Image C057 2077 Science Photo Library a Melanotic macule at the wetdry line of the lower lip. b Melanotic Download Scientific Diagram Any information on dark spots on the bottom lip? Pigmented Oral Lesions: Clues to Identifying the Potentially Malignant Consultant360