I wonder if anyone else has my problem - I have spells when i get severe back pain across my shoulder blades, shoulders up to my jaw, and top of arms and sore across chest. - this is not heart related - the cardiac people have fully investigated this. I get very very SOB at the time and sweaty. I have twice been taken in as suspected heart attack with this only to find (as I could have told them) that my heart was absolutely fine. Neb and oxygen for about an hour sorted it out. But the pain is a nightmare. I think it is related to muscles going in to some sort of spasm or something like fibromyalgia. Would be glad of any input. This site is fabulous and just reading and talking to others with similar problems just improves my day.