There are several possible causes for shoulder and arm pain: First, cold and wind can cause shoulder and arm pain, and can be accompanied by symptoms of limited shoulder joint movement. Second, cervical spondylosis, when cervical spondylosis compresses the nerve, it can also appear the shoulder and arm pain, to carry out cervical spine X-ray, nuclear magnetic examination to make a diagnosis. Third, myofasciitis. Myofasciitis often starts with pain on the inner side of the scapula, which can radiate to the ipsilateral shoulder and upper limbs, resulting in pain, weakness, and numbness. Fourth, shoulder diseases, when the shoulder joint has frozen shoulder or rotator cuff injury, there will also be symptoms of shoulder and arm pain, we need to conduct relevant physical examination and shoulder joint MRI to diagnose and treat.