Hi welcome to Health care magic forum. As you describe the pain path is of brachial nerve and, radial nerve
. It appears to be due to cervical spondylosis
, due to pressure on the brachial nerve, showing pressure symptoms.
High potency bcomplex by parental route, anti inflamatories, and muscle relaxants may be needed. if no relief physiotherapy
may be needed.
I advise you to consult an orthopedic surgeon for diagnosis and treatment. You may need to have C.T.scan for confermation of the diagnosis.