pso·ri·a·sis
noun/səˈraɪəsɪs/
/səˈraɪəsɪs/
[uncountable] (medical)- a skin disease that causes rough red areas where the skin comes off in small pieces
银屑病；牛皮癣 Word Originlate 17th cent.: modern Latin, from Greek psōriasis, from psōrian ‘have an itch’, from psōra ‘itch’.