ichthyosis
  魚鱗癬; 鱗癬
  ich·thy·o·sis /ˌɪkθɪˈosəs/ 名詞
  魚鱗病
  Ich·thy·o·sis n.  Med. A disease in which the skin is thick, rough, and scaly; -- called also fishskin. -- Ich*thy*ot*ic a.
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  ichthyosis
       n : any of several congenital diseases in which the skin is
           fishlike (dry and scaly)