Aunt, also known as menstruation, the cause of numbness in the legs during menstruation is considered to be related to pelvic congestion, limb edema and other factors. 1. Pelvic congestion: during menstruation, women will increase the secretion of prostaglandins in the body, which will lead to symptoms of dysmenorrhea, and there will also be pelvic congestion, which affects the venous return of the lower extremities, resulting in numbness of the legs. 2. limb edema: women come to menstruation during leg numbness, may also be and limb edema compression of local nerve tissue, because the hormone level fluctuations in the body during menstruation, and then there will be weight gain and limb edema and other related symptoms, compression of the local nerves, there will be a numbness of the leg performance. Numbness of the legs during menstruation may not be related to menstruation, but rather to a herniated lumbar disc, which compresses the sciatic nerve and causes numbness in the lower limbs. We need to cooperate with the doctor to clarify the cause as soon as possible, and give targeted treatment and therapy.