tim,
I agree with KS.
It sounds exactly like RSD.
What happened to you? Injury?
You need some medication to get your life under control.
I'm a guitar player too, and jeez, I have a good regimen of medication, and it pains me to think about restringing it!
Are you near a city? (Usually better doctors)
Go to:
www.rsdsa.org
Lots of info, and a doctor finder as well!
PM me if you wish.
pete
asb