Hello itburns, welcome to the forum.

It seems like you've had quite a few MRI's, but were any of them done "with contrast"? I've read several horror stories about neuropathy type issues occurring after MRI's using gadolinium contrast fluid.

My own PN symptoms changed and became more severe after getting an MRI with gadolinium contrast. I don't think it "caused" my PM, but it certainly didn't help, and I think there's a good chance it made things worse.

One thing they didn't tell me when I had the MRI was that you should drink a lot of fluids afterward, in order to flush the gadolinium out of your system as soon as possible. Gadolinium is very toxic, but it is bound to a cheleating agent that keeps it from depositing in your body and allows it to be flushed out through your kidneys. But, if it stays in your body too long, more will escape from the cheleating agent and stay in your body, where it then becomes very difficult to get rid of.