Women have the following three reasons for back pain when turning over at night: first, lumbar muscle strain and lumbar back myofasciitis: when cold or long-term strain will appear lumbar muscle strain or myofasciitis, then the back pain is more obvious when turning over at night. Second, lumbar disc herniation: patients with lumbar disc herniation often have more obvious pain when turning over, often accompanied by hip discomfort or numbness and pain in the lower limbs. Thirdly, slipped lumbar spine: the pain of slipping is as painful as a broken back, especially when turning over, and can also be obvious when sitting for a long time or when bending over.