It took me 4 years to find a Doctor who didnt tell me my pain was from getting old.! The work comp Docs were just trying to push me back to work!
The way I did this was to research my symptoms..all over the Web, chat room convos with people to compare....I got to an understanding of what the Doctor should be doing..if he was trained enough, to do the right things, which would lead to a diagnosis....
It's not easy, and more than frustrating...
this is a great site...all I can say is read read read..become a educated as you can