Lower back pain after waking up may be due to catching a cold, doing a lot of heavy physical labor, or lumbar back musculoskeletal inflammation. 1. Cold: If you don’t pay attention to keep warm when you sleep, the cold in your lower back will cause poor local blood circulation, so there will be pain symptoms. 2. A lot of heavy manual labor: If you have done a lot of heavy manual labor, especially heavy manual labor on the lower back, such as porters, etc., it will cause damage to the local muscles and ligaments and acid buildup, and the pain will be more obvious after resting for a night. 3. lumbar dorsal fasciitis: lumbar dorsal fasciitis may be related to long-term muscle strain, cold and sprains and other factors, is the occurrence of aseptic inflammation of the fascia, the main symptom is the pain in the lower back, in the long term to maintain a posture, the weather becomes cold, the symptoms will also be aggravated. If you wake up with back pain, it may be due to other reasons, and you should go to the hospital in time, and standardize the treatment after clarifying the cause.