Thank you very much for the link to the testing.

The thyroid issue came up about 7 years after he was diagnosed with the PN, so not a cause. I wish it was that easy!!

We live in Canada so no payment required for the "standard" tests. His GP is very good so I think he would help us narrow it down.

Someone else on the list has referred us to a local neurologist that they feel is good so I'm going to pursue that too.

Thanks again, Linda