[Dyschromatosis universalis: two cases].

Universalis dyschromatosis is a rare genodermatosis. Melanogenesis dysfunction appears to be the main etiology. We report two cases, discussing the clinical features, diagnosis and etiology of this disease.A 21-year-old man was referred for a mixture of achromatic and hyperchromatic lesions that had progressed on sun-exposed skin areas since birth. The histopathologic study evidenced increased melanin content in the basal cell zone but no...