Often back pain old feel tired, should be alert to myofasciitis, osteoporosis, ankylosing spondylitis, lumbar spine disease and heart disease. 1. Myofasciitis: Myofasciitis of the back is caused by strain injury, poor recovery from trauma, cold and damp stimulation, etc. These factors will cause aseptic inflammation of the back myofascia, resulting in back pain, stiffness, fatigue and other symptoms. These symptoms will be aggravated especially after exertion or exposure to cold. 2. Osteoporosis: It is a bone metabolic disease, mostly seen in elderly patients. There will be a decrease in the amount of bone, the destruction of bone tissue microstructure, and good in the spine, but also cause frequent back pain and fatigue, and in severe cases, there will be generalized pain in multiple joints, easy to fracture and other symptoms. 3. Ankylosing spondylitis: a chronic inflammatory disease, mainly involving the spine, sacroiliac joints and peripheral joints and other parts of the patient’s early lumbosacral pain, morning stiffness and other symptoms, with the progression of the disease, and gradually involve the lumbar spine, thoracic vertebrae and other parts of the spine, can also cause frequent back pain and old tiredness. 4. Lumbar spine disease: lumbar spinal stenosis and lumbar disc herniation can cause back pain due to compression and irritation of the fascia and soft tissues around the lumbar vertebrae by the protruding intervertebral discs and proliferating bony cumbersome, which can lead to back pain. 5. Heart disease: angina and coronary heart disease and other heart diseases will radiate and involve the back, causing back pain. It can be seen that the causes of frequent back pain and old feeling tired may include pleurisy and lung tumors, etc. If the symptoms are serious or have not been able to relieve, you can go to the hospital to further find out the cause of the disease, and then targeted treatment.