Dyschromatosis universalis hereditaria is a type of pigmentation disorder of the skin. It is characterized by dark and light spots formed like lace in a generalized distribution. Both autosomal dominant and recessive inheritance have been reported with the disorder. It has been associated with mutations in genes SASH1 and ABCB6. It is a rare genodermatosis.

Reference
Wiki: Dyschromatosis universalis hereditaria