I have been having this problem for about two years now, it starts in the middle of the back then radiates around the rib cage. It feel like that I have a vise around my chest and it makes it hard to take a breath. I cannot stand or sit up straight for any lenght of time because it feels like I have something weighting down on my rib cage.
I just found out that I may have some heirnated disks in my upper spine or thorax area.
Sometime the pain is so bad I just cry, this pain never goes away, I take muscle relaxers and pain pills everyday to try and help ease the pain, but if I stand/walk/sit for any lenght of time they are no help.
Not sure if this makes any sense to anyone, but any information would be helpful