You are on the Jackson beam "Topsecret". There are several simple tests. You may have what is called a subluxion injury. There are several controversies involving treatment ptotocols, but you really need to find an M.D. that will take an interest in you. Your physician can order another electrical test for nerve function tha can identify the specific nerve.
Perhaps a cervical vertebra (in your neck) is impinging on a nerve and causing these symptoms.