<prompt> Ichthyosis is caused byHemosiderosisRefsum diseaseNiacin deficiencySteven johnson syndrome  <response>: Syndromal ichthyosis ichthyosis with additional characteristics is seen in carvaj al syndrome, CHILD syndrome, Daffier s disease, Refsum disease, Rud syndrome, Netherton syndrome, Neutral lipid storage disease, Tey syndrome, Senter syndrome. 