What are the causes of primary dysmenorrhea?

Primary dysmenorrhea is mainly related to the increase of prostaglandin, prostaglandin can cause excessive contraction of uterine smooth muscle, vasospasm, thus causing uterine ischemia, hypoxia, and then cause women to show dysmenorrhea. In addition to prostaglandin, primary dysmenorrhea is also related to the increase of vasopressin, endogenous oxytocin and other substances. Mental factors and neurological factors can also cause women to show primary dysmenorrhea. Dysmenorrhea is more serious can drink brown sugar water, hot milk to alleviate, can soak feet or appropriate exercise to promote blood circulation, so that menstrual blood discharge to improve dysmenorrhea purposes.