IPA: /ˈtɛnɪsməs/
KK: /ˈtɛnɪsməs/
A painful feeling of needing to urinate or have a bowel movement, but being unable to do so effectively.
After eating the spicy food, he experienced tenesmus and rushed to the bathroom.
Tenesmus is derived from the Greek word "tenesmos" (meaning straining or a feeling of incomplete evacuation). The term is used in medical contexts to describe the sensation of needing to pass stools, often without success, indicating a distressing urge to defecate.
Imagine the feeling of straining to go to the bathroom but not being able to — that's what tenesmus describes.
No commonly confused words.