Back pain may be caused by over-exercise, lumbar and dorsal fasciitis, soft tissue injuries, osteoporosis, etc. If the symptoms persist, it is recommended to seek medical attention. 1. Over-exercise: If you have been doing intense exercise recently, it is easy to cause the accumulation of lactic acid in your back, which in turn produces the feeling of soreness. 2. Lumbar back fasciitis: usually associated with repeated wear and tear of the lumbar back fascia, it is a sterile inflammatory response that can cause back soreness. 3. Soft tissue injuries: trauma to the back or previous history of trauma, muscle and ligament injuries, or chronic strain of the muscles of the back, cold stimulation may also cause soreness. 4. Osteoporosis: usually occurs in the middle-aged and elderly people, the middle-aged and elderly people are prone to bone loss and osteoporosis, there may be a slight discomfort in the lower back and pain, and in severe cases, there will be osteoporotic fracture. Back pain can be caused by a variety of reasons, and may also be related to ankylosing spondylitis, scoliosis, osteoarthritis, tumors and other diseases, if the symptoms persist, it is recommended to go to the hospital in a timely manner to find out the cause of the disease, under the guidance of the doctor targeted treatment.