DICT.TW Dictionary Taiwan

 te·nes·mus /təˈnɛzməs/
 裡急後重; 裡急後重; 下墜

 te·nes·mus /təˈnɛzməs/ 名詞

 Te·nes·mus n.  Med. An urgent and distressing sensation, as if a discharge from the intestines must take place, although none can be effected; -- always referred to the lower extremity of the rectum.
 Vesical tenesmus, a similar sensation as to the evacuation of urine, referred to the region of the bladder.
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 tenesmus
      n : painful spasm of the anal sphincter along with an urgent
          desire to defecate without the significant production of
          feces; associated with irritable bowel syndrome