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 Riehl Melanosis MD Searchlight Ocular Melanosis Explained by Dr. Shakeel , "Ocular Melanosis is a condition where melanin the pigment responsible for eye color gets excessively deposited in the white part of the eye Lentigo maligna and lentigo maligna melanoma This lovely patient was thrilled with her beautiful result after laser treatment of oral melanotic macules. I share this case to educate: laser treatment requires accurate diagnosis, an understanding Melanosis Wikipedia