Dyschromatosis Symmetrica Hereditaria

**Semantic type:** Disease or Syndrome

**Definition:** A rare, autosomal dominant inherited disorder caused by heterozygous mutation in the DSRAD gene. Most cases have been reported from countries in East Asia. It is characterized by the presence of hyperpigmented and hypopigmented macules on the dorsal aspect of the extremities and face.

**Synonyms:** - DSH1 - Dyschromatosis Symmetrica Hereditaria 1 - RAD - Reticulate Acropigmentation of Dohi - Symmetric Dyschromatosis of the Extremities