Pigmented Lesions of the Oral Mucosa Pocket Dentistry a Melanotic macule at the wetdry line of the lower lip. b Melanotic Download Scientific Diagram This patient has multiple labial melanotic macules. These are essentially freckles of the lips. These most commonly involve the lower lip. This patient had involvement of both the upper and lower lips. Oral Melanotic Macule: Symptoms and Treatment Skinsight