A more common cause of numbness in the arms is cervical spondylosis. Due to cervical disc herniation, calcification of the posterior longitudinal ligament, or osteophytes, hypertrophy of the ligamentum flavum, etc., will lead to corresponding compression of the spinal cord or nerve roots, which will produce numbness and radioactive pain sensation in the area it innervates, etc., which may lead to numbness in the arm. You must pay attention to rest, do not push, massage, need mannitol dehydration to reduce swelling, the application of drugs to improve blood circulation, such as prostaglandin injection, nutritional nerve drug treatment, methylcobalamin capsule symptomatic treatment, generally will be very good relief. If you can’t reduce it, you need to undergo surgery, which may also be caused by the compression of peripheral nerves. It is necessary to improve the electromyography examination, with indications for surgery, also need to carry out surgical decompression, but also to avoid a long time a posture, avoid a long time to repeat a certain kind of action. It can also lead to local muscle fiber spasm, congestion and edema, resulting in nerve stimulation, causing local numbness.