<prompt> Steroid suphatase deficiency is seen inIchthyosis vulgarisLamellar IchthyosisX linked recessive icthyosisNone of the above  <response>: X-linked ichthyosis abbreted XLI is a skin condition caused by the hereditary deficiency of the steroid sulfatase STS enzyme that affects 1 in 2000 to 1 in 6000 males. XLI manifests with dry, scaly skin and is due to deletions or mutations in the STS gene. Ref Harrison20th edition pg 1332 