I think it's a no brainer. You have already said that the current neuro doesn't know anything else to do. If I had the opportunity to see a neuro that specializes in PN, I drive the distance without another thought. Yes, it's inconvenient, but it may save your wife a great deal of pain. Since your neuro seems willing to work with other sources of information. How about a consultation visit with the neuro that is two + hours away and any tests, etc that the consulting neuro advises might be done by your present neuro?

Billye