The symptoms of arm soreness may have the following causes: 1, because of excessive activity, work is more strenuous, lifting heavy objects, or do other excessive arm force movements, will lead to arm muscle soreness, because the muscle after more than the ability to withstand the force, will show inflammation or minor injury, often the symptoms are after a night’s rest, the second day to appear; 2, If a person works with his head down or at a desk for a long time, he may suffer from cervical spondylosis. Cervical spondylosis is caused by prolonged head down and leads to osteophytes in the cervical spine, which compress the cervical nerve to varying degrees. In patients with mild symptoms, there is only a sore feeling in the arms. If the cervical spondylosis is serious, there may be pain and numbness in the arm. 3. If the arm is sore, accompanied by pain in the shoulder and limited movement of the shoulder, it is possible that the soreness is caused by frozen shoulder.