xeroderma
  皮膚乾燥病
  xe·ro·der·ma /ˌzɪrəˈdɝmə/ 名詞
  幹皮病,皮膚乾燥病
  Xe·ro·der·ma n.  Med. (a) Ichthyosis.  (b) A skin disease characterized by the presence of numerous small pigmented spots resembling freckles, with which are subsequently mingled spots of atrophied skin.
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  xeroderma
       n : a mild form of ichthyosis characterized by abnormal dryness
           and roughness of the skin [syn: xerodermia]