Melanotic macule. Benign. Dark spot on labia (or lip). Analogous to lentigo simplex. Hyperpigmented basal keratinocytes & dermal melanophages. Slight in single basal melanocytes; NO nests. More info like this in dermoscopy: A pigmented labial lesion Oral melanoacanthoma and oral melanotic macule: a report of 8 cases, review of the literature, and immunohistochemical analysis Labial melanotic macule Pigmented Lesions of the Oral Mucosa Springer Nature Link Citalopram Induced Oral Melanotic Macules in a Female Patient and a Review of the Literature Cureus