Reticulated pigmentation is a unique pigmentary change caused by a heterogeneous group of hereditary and acquired\ndisorders. This pigmentation is characterized by a mottled appearance, with lesions that vary in size and pigmentary content.\nThis review discusses the hereditary group of the reticulated pigmentation disorders, such as dyschromatosis symmetrica\nhereditaria, dyschromatosis universalis hereditaria, and reticulate acropigmentation of Kitamura. The clinical presentation and\nhistopathological features often overlap, making diagnosis difficult. However, each of these hereditary conditions possesses a\nunique genetic mutation, and genetic analysis is thus more useful in the diagnosis of these conditions. This article delivers\nan update regarding the clinical features, detailed histopathological description, and genetic information concerning hereditary\nreticulate pigmentary disorders and aims to provide useful background for use by clinical dermatologists and histopathologists\nwhen approaching this group of hereditary disorders.
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