The common causes of soreness in the right arm and shoulder include the following: First, cervical spondylosis, neurogenic cervical spondylosis and mixed cervical spondylosis can lead to edema and inflammation of the right nerve, and the patient can show symptoms of radioactive soreness in the right upper extremity and shoulder, accompanied by muscle weakness in the right upper extremity, and cervical MRI can reveal compression of the cervical nerve. Second, brachial plexus nerve injury, acute trauma to the neck and shoulder, can cause brachial plexus nerve strain injury, the patient will have persistent soreness symptoms in the right arm and shoulder, and at the same time will be accompanied by hypoacusis. The above two causes are relatively common clinical diseases that can cause right upper extremity and shoulder soreness symptoms. Choosing treatment methods according to different etiologies can lead to gradual relief of symptoms.