Skin General 376dc592 Ichthysis is caused by: A Hemosiderosis B Refsum disease C Niacin deficiency D Steven johnson syndrome High-Yield Explanation B. i.e. Refsum's disease Icthyosis is seen in Hypothyroidism, AIDS, Refsum disease and LymphomaQ. (Mn-"HARLY i.e. name of motor cycle Harly Davidson).