So, may have found some useful information recently.

Long story short- I had been on an anti-acne topical cream since January. When my neurological symptoms started, I attributed them all to the Anti-Depressant I had just started taking. Meanwhile, I kept taking the acne cream without, and never mentioned it to my doctors. It seems silly, but I just never even considered it could have been a factor. I think my brain just made the assumption that medicine=pills taken orally, which is not true obviously.

So I looked at the drug info for the cream, it's called Aczone. It contains Dapsone, which listed in the fine print, says it can cause PN when ingested, or with other drug interactions I guess? I never ingested it, but I think this is pretty big piece of the puzzle. I have no idea what in the Viibryd would have triggered the symptoms, but just a few days off the Aczone and I see an improvement. What is worrying me now is figuring out how much damage I've done.

I think the high glucose levels were the result of a high does of steroids I was on, although I'm still limiting my carbs and sugars.