No progression in my case. It certainly irritated things and caused a flare up but tapered off when the cold went away. Not sure why the common cold could/would cause a progression of symptoms. If you are healthy beyond the nerve damage I don't see why you would see a progression. I can't speak on the possibility of the Neuropathy worsening if it is auto-immune related, but i have never heard of that either. pretty sure it's a temporary situation.