Dear Dr. I am having pain in shoulder since last 9 years. intially started in left side pain starts just at one point and spreads around like volcaco. i am going through treatment since last 9 years intially in neuro and later on ortho. MRi, Nerve test is normal. this pain is moving from left to right and left over period of time. Medicine taken for long is DUPACT. got relief 50% but not cured. pl advice