魚鱗癬; 鱗癬
Ichthyosis \Ich`thy*o"sis\, n. [NL., fr. Gr. ? fish.] (Med.) A disease in which the skin is thick, rough, and scaly; -- called also {fishskin}. -- {Ich`thy*ot"ic}, a.
ichthyosis n : any of several congenital diseases in which the skin is fishlike (dry and scaly)