I have a chronic right upper back MPS. Recently, light to moderate pain seems to bother me the passed days. Keeping my posture by lifting up my breast bone really alleviates the pain but still bothers me though. Then I had a chance to swim once and it really, I think anesthetize, the pain I have. But the next morning the pain I felt was different. Aside from the pain I describe, I am now having a weight bearing-like weakness on the shoulder down to my elbow. I felt it when I lean over on my elbow and when I slouch my back. It is not definitely a radiating pain or localized pain. Anybody that can help me will be very much appreciated. Thank you.