Oral melanoacanthoma and oral melanotic macule: a report of 8 cases, review of the literature, and immunohistochemical analysis Pigmented Lesions of the Oral Mucosa Springer Nature Link Spotty lips. These are labial melanotic macules, kinda like freckles on the lips. They are mostly due to age and sun exposure, but sometimes they run in families and are associated with Labial melanotic macule Oral Mucosal Melanosis IntechOpen