I have had this for years & not realized it recently went away until it came back! I had been doing an exercise the physio gave me for sore shoulders (I do long hours at the computer) & this must be what helped it. Roll up a towel, place it long ways down your upper spine & lay on it for a few minutes ( can't do it long to start with) a couple of times a day. Helped in so many ways! Back to the floor with me!!