Back pain during menstruation is mainly related to the change of hormone level in the body, because estrogen and progesterone will drop during menstruation, and because of individual differences, everyone has different sensitivity to this drop in hormone level. If you have back pain, you can give proper rest and it is also recommended to enhance nutrition and energy in your diet to improve the symptoms of back pain. If necessary, physical therapy can also be done to promote local blood circulation, which will also relieve this symptom. If women nearing perimenopause experience back pain, they should consider whether it is caused by calcium deficiency and, if necessary, take calcium supplements and get more sunlight.