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11
Aug
Primary dysmenorrhea is caused by strong contractions of the uterus trigged by prostaglandins, chemicals in the body that are involved in inflammation and that stimulate pain receptors. Higher levels of prostaglandins are associated with more menstrual pain.
Secondary dysmenorrhea can be caused by endometriosis (inflammation of the lining of the uterus), blood and tissue being discharged through a narrow cervex, uterine fibroid or ovarian cyst, infections of the uterus, pelvic inflammatory disease (PID) and intrauterine device (IUD).
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