answer:I had a pain in my left shoulder and a pain in my back, about waist high and to the left. Both traveled down the adjacent limb and left my body. For instance I had weak shoulder, then weak elbow, then weak wrist, and finally weak hand. Then the pain disappeared. Over months. True story. The only thing I can think of is that I have scoliosis – curvature of the spine – and there was a compressed nerve, As the compression increased, the pain traveled.