Ichthyosis is caused by –
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.
Hemosiderosis
Refsum disease
Niacin deficiency
Steven johnson syndrome