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