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 Does anyone know what this black mark on my lip is? Started last August so it's I've had it nearly a year, was living in Spain at the time for 6 months Oral Mucosal Melanosis IntechOpen Should I get a 2nd opinion about these freckles on my lips from another dermatologist? Last time they say it's just sun spots but the bottom one in particular still keeps me Pigmented Lesions of the Oral Mucosa Springer Nature Link