Hi. I've had SFN poly peripheral. Don't be scared.
Getting the underlying cause will help treatment. Think of this, I don't know what causes mine so I just have to take heavy meds.
Plus being prediabetic isn't diabetes. And now you can try to reverse it.
I have the positive skin test and a bunch of others.
Trust your neuropathy doctors. Research as you go and ask your doctor every question you came to this board to ask. Doctors like patients engaged in their care. Don't give up.