Thank you both for your kind words.
Went yesterday for nerve EMG and another test involving a long needle that I'd rather forget - both were normal. The sweet doctor is still stumped and the LP is scheduled for two weeks from now, so he drew more blood for more labs in the hope that something will pop up. The PT doesn't think anything I can do in physical therapy will really help the vertigo either. I'm supposed to give it a shot for a few weeks to see if it lessens the vertigo a little. I suppose it's all well enough, the numbness/tingling are less and most days the vertigo is far less than it was at its worst.

Anyway, thank you for your support.