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 Random dark marks on lips : r Blackskincare Melanotic macules of the tongue in a newborn Journal of the American Academy of Dermatology Tiny brown spot on the lip? Don't ignore it. A melanotic macule is a small, well circumscribed brown to black oral lesion most commonly seen on the lower lip and a high yield ADC exam favourite. Melanotic Macules, Naevi, and Melanoma Springer Nature Link