X-Linked Ichthyosis

**Semantic type:** Disease or Syndrome

**Definition:** The second most common form of ichthyosis. It is an X-linked inherited disorder with mild skin manifestations. The skin changes appear at birth and include keratinization and scaling.

**Synonyms:** - Ichthyosis, X-linked - Steryl-sulfate sulfohydrolase deficiency - X-linked placental steryl-sulfatase deficiency