I have been feeling my left shoulder and arm pain for the last 6 yrs , when mri carried out it shows mild pid C5 C6 C7 , from last 6 yrs this pain is consistent, A lots of ECG and ECHO have done , always came normal, I have been taking petril beta 20 mg for the last 6 months , as prescribed by a neurologist for migraine and pain attack bp shoot up during anxiety, now doctor has changed the medicine Now prescribed nebistar 2.5 mg , I have been taking it for the last 3 days , I am feeling my arm and shoulder pain have been relieved, I never felt weekness or chest pain , sweating