pit·y·ri·a·sis /ˌpɪtɪˈraɪəsəs/
  糠疹
  pit·y·ri·a·sis /ˌpɪtəˈraɪəsəs/ 名詞
  Pit·y·ri·a·sis n.
  1. Med. A superficial affection of the skin, characterized by irregular patches of thin scales which are shed in branlike particles.
  2. Veter. A disease of domestic animals characterized by dry epithelial scales, and due to digestive disturbances and alteration of the function of the sebaceous glands.
  Pityriasis versicolor  Med., a parasitic disease of the skin, characterized by the development of reddish or brownish patches.
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  pityriasis
       n : any of several skin disorders characterized by shedding dry
           flakes of skin