Menstruation usually refers to female menstruation, and back pain during menstruation may be related to pelvic congestion, dysmenorrhea, and spinal inflammation. 1. Pelvic congestion: the pelvis is relatively congested during menstruation, and some patients with pelvic varicose veins will experience low back pain. 2. Dysmenorrhea: During menstruation, the uterine lining of the female uterus sheds, which in turn produces mild pain to a certain extent, and in severe cases, can lead to lumbar pain. 3. Inflammation of the spine: back pain during menstruation may also be associated with inflammation of the spine, spinal tumors and other causes, it is recommended to go to the hospital in time for a detailed physical examination. There may also be other reasons for back pain during menstruation, so it is recommended to go to the hospital in time, improve the examination to clarify the cause of the disease, and then give targeted treatment or therapy.