TOPICS: Melanocytes, neural crest cells, melanin, melanosomes, keratinocytes, vitiligo, patchy skin depigmentation, albinism, autosomal recessive, tyrosinase, dihydroxyphenylalanine, ocular impairment, ephelide, freckle, melasma, facial hyperpigmentation, pregnancy, oral contraceptive, mask of pregnancy, nevus, melanoma, dysplastic nevus, xeroderma pigmentosum, albinism, BRAF kinase, asymmetrical, irregular borders, color variation, diameter, evolving, vertical growth, metastasis, superficial, nodular, lentigo maligna, acral lentiginous