Left arm pain symptoms, to be considered from the following aspects: 1, long-term low head work or have a habit of often low head may suffer from cervical spondylosis, because of long-term cervical spine pulling stimulation, resulting in cervical spine osteophytes, compression of the cervical nerves, can cause arm pain symptoms, often easy to be ignored. Only the symptoms of arm pain or numbness, but do not feel, specifically which position of the pain. 2, moving things, strenuous exercise, long time housework, etc. are likely to damage the arm muscles, ligaments and other structures, and did not have a clear fall and other traumatic situations, this situation is also relatively common. The location of the arm pain is relatively fixed, and the pain will be aggravated when you move your arm. If the pain is close to the elbow joint, the elbow joint should be considered first; if the pain is close to the wrist joint, the wrist joint should be considered first.