A stabbing pain in the lower back may be caused by lumbar muscle strain or lumbar disc herniation. People who bend over for long periods of time to do manual labor or work in one position often are prone to lumbar muscle strain, lumbar muscles are stretched, ligaments are strained and do not get relaxed for a long time, which may lead to lumbar muscle pain, and people with a history of sprains are also prone to it. Patients with lumbar disc herniation will experience pain in the lumbar region, while releasing to one side of the leg, with numbness and pain. It is recommended that a clear diagnosis be made by lumbar disc CT, and bed rest can be taken during pain.