Spasmodic contractions of the uterus, such as those occurring during menstruation or labor, usually causing pain in the abdomen that may radiate to the lower back and thighs.

• 子宫痉挛子宫的痉挛性收缩，比如发生在行经期，通常能导致腹部疼痛并有可能引起下背部和臀部的疼痛