Melody,
You don't want Alan to have a sural nerve biopsy, in my opinion. When I was at Mayo, the idea of a sural nerve biopsy was brought up and I was told that they would not do one unless it was absolutely necessary. The words of the neuro were "You realllllllly don't want to do that unless it is absolutely necessary!" Sometimes the pain connected with the sural nerve biopsy never goes away and you really don't want Alan to have more pain.

He is already getting IVIG, and I'm not sure what more they could do for him.

Billye