Venous Lake of Lip and Lip Freckle Removal with Iridex Laser PDF) Labial Melanotic Macule Diagnosed by Dermoscopy Have a brown black spot on your lips??, Labial Melanotic Macules, not cancerous , #drrubanskinguru , #dermatologist, #sunspots Labial melanotic macule ORAL MELANOTIC MACULE (OMM) (Also called focal melanosis labial melanotic macule) A benign, localized, flat pigmented lesion of the oral mucosa Caused by a focal increase in melanin production