Often the patient's right arm is sore, and the cause may generally be cervical spondylosis. Because the nerve roots in the spinal cord are stimulated, it will lead to the pain of the innervated parts such as the right arm, accompanied by symptoms of nerve injury such as numbness and finger weakness.

If the right arm has a history of overwork, strain, cold or external injury, it will lead to local soft tissue injury and excessive lactic acid accumulation in the right arm, and the right arm will also be sore. If the patient's right arm rotator cuff is injured, it will also cause pain or radiation pain due to muscle injury.

It is also possible that the right shoulder joint is inflamed, which is a kind of aseptic inflammation and will cause pain and radiate to the surrounding area.