What causes aunt pain?

The occurrence of primary dysmenorrhea is mainly related to the increase of prostaglandin content in the endometrium during menstruation. High prostaglandin content can cause strong contraction of uterine smooth muscle, vascular contracture, uterine ischemia and hypoxia, and show dysmenorrhea. Moreover, primary dysmenorrhea is also affected by mental nerve factors, and subjective pain perception is also related to individual pain threshold. Secondary dysmenorrhea mainly refers to dysmenorrhea caused by pelvic organic diseases, such as endometriosis, adenomyosis or pelvic inflammatory disease, all of which may show secondary dysmenorrhea. If dysmenorrhea appears, you can take corresponding drugs under the guidance of a doctor for treatment, such as ibuprofen or naproxen.