melanotic macule labia macule. Benign. Dark spot on (or lip). Analogous to lentigo simplex. Hyperpigmented basal keratinocytes & dermal melanophages. Slight ⬆️ in single basal melanocytes; NO nests. More info like this in Melanocytic Lesions | A Guide
Description
Yet, these case reports involve prolonged use of MT-II (over a month of daily use) alongside other tanning procedures, such as sunbed tanninga major melanoma risk factor [17]

They found a peripheral decline in Sox2 in nerves might make SCPs susceptible for an induction of MITF and differentiation into melanocytes 4 (figure 4)

British Journal of Dermatology

The stroma exhibited concentric eosinophilic and lamellar fibroplasia, diffuse lymphocytic infiltrate, and vascular proliferation

doi:10.1038/s42003-020-0892-6
