Bad spine will cause localized pain (headache and dizziness, pain in the back of the neck, back pain, lumbago, leg pain, hip pain, etc.), activity limitation (limitation of turning the head in the neck, inability to bend over, etc.), dysfunction (numbness and weakness of the upper limbs, limitation of hand movement, weakness of the lower limbs to walk, intermittent claudication, etc.). 1. Pain: bad cervical spine will cause headache and dizziness, muscle pain at the back of the neck, and with the progress of the disease, there may be arm pain and weakness; bad thoracic spine will cause back pain; bad lumbar spine will cause lumbar pain, and compression of the sciatic nerve will cause pain at the back of the thighs and buttock pain. 2. Restriction of activities: bad cervical spine will have limitation of neck turning, head tilting and head lowering; bad lumbar spine can have lumbar pain, such as not daring to bend over and side bending. 3. Functional disorders: when the cervical spine compresses the nerves, there may be numbness and weakness of the upper limbs, and decreased flexibility of the hands, which may result in the inability to use chopsticks flexibly, etc.; when the lumbar spine is bad, there may be unstable walking, weakness, and intermittent claudication. If the above symptoms occur, it is recommended to go to the hospital in time for regular treatment.