The future holds this:
http://www.bodyinmind.org/who-are-we/
This is an Australian research team that studies the effect of teaching the brain new reaction patterns when it is in pain. Apparently, Lorimer Moseley (a physiotherapist and professor at Uni of South Australia) has seen 70ish people with TN, according to a newspaper article aboutTN.
I read one of his case studies, and it had real effect with chronic back pain 10 years ago, so there is real hope. Pain signals to te brain stay pain signals to the brain, nevermind where in the body the pain is.
I am pretty sure continued success will be spread to neuros and specialist physios around the world, and that this will get more research.
A big bunch of us here have TN2/ATN. The routes are hardly ever finished if you just started your journey. There are things like
PNS (peripheral nerve stimulator), several types of non-invasive surgery and a few more invasive ones, and the list of meds is reasonably long.
As I am 35 and had it since 20, I am pretty good at this hope thing. Literally the best for me is to NOT ENCASE MYSELF IN THE TN BUBBLE. Monitor your triggers. Knowing them allows you to do stuff and see people without fear.
I do hard distraction therapy, like video games, see friends, stay away from triggers, and keep doing (somewhat modified versions of) the things I enjoy, including work (very flex hours). If I don't feel like going out, I talk on the phone. Don't let the pain do that robbing. Be angry at it, but don't give in to despair. It really does not help. Really not. And - comfort yourself it could be worse. It could be something stinky, you could've lost senses, it could be terminal, or you could haveTN in a war zone. (Since you have seen 5 docs, guessing it's not to that were you live).
Seeing a psychologist can work wonders. If you are at the end of your rope, please do consider this.