Hi,
Well, if these symptoms are neurological, then taking tegretol couldn't hurt - unless you have a bad reaction to it. If you are unable to tolerate tegretol maybe you could ask for something like neurontin/gabapentin - something that I find personally more tolerable - but it is different for everyone. When I began gabapentin for my face, I was so happy to feel my persistent neck pain (C6/C7 nerve entrapment) disappear.
It's really a crapshoot regarding tolerance of the different drugs, but you might find the magic one that works. Getting a second opinion sounds like great idea - not to mention a third or a fourth, because your symptoms are so generalized, and he only focused on the one. I have no idea what it is, whether it is TN or not, but I do wish you the best of luck on your journey to get to the bottom of this.
Happy holidays,
Lily