muscle strain in shoulders diagnosed almost two years ago. Limited range of motion in neck severe pain. Upper back is in chronic pain. Deltoids are tender almost daily some worse than others. Did physical therapy for six weeks continued the exercises that do not cause pain and apply heat and take very warm baths for comfort. Recently left arm is having sharp shooting pains out of no where just begun. However this has happened in the past. Going to primary care doctor next week any ideas on what this might be and if I should push for testing rather than going back to therapy?