reticulate acropigmentation of Kitamura

an autosomal dominant pigmentary genodermatosis caused by mutations in the KRT5 gene (locus:12q13), which encodes keratin 5, characterized by slightly depressed, hyperpigmented macules arranged in a reticulate pattern on the dorsal extremities, appearing in early childhood. It most commonly occurs in Asian ethnic groups. Some authorities consider it to be the same disorder as Dowling-Degos disease.