Bethanne,
Sorry you've had to come here.
It would be best if you could get your mom to come here herself,
to get the most out of our collective experiences.
She's going to have to go thru an entire change in attitude, and take control of her medical treatment plan.
She'll have to be her own best advocate
.
Many of us have gone thru many doctors- fired a few,
for lack of specialization and lack of compassion.
PN is a silent and painful disease.

Where are you?
Are you close to a Mayo Clinic, Johns Hopkins, Cornell-Weill, Jack Miller Center?
(There are others, too)
What kind of a doc (neuro, GP, PCP, etc) diagnosed your mom
& Rx'd her meds?