Mine was caused by Prediabetes & I was low in B12, it started in my feet then went up my legs, some large nerve involvement going by an emg but mostly bothered by the burning & electric like jabs and numbness.
For the last 2 years I have been symptom free, everything is back to normal, it took 5 years to get to this stage though.

I do hope they can find the culprit causing your neuropathy.