Thanks for all your suggestions and info...

In terms of his symptoms, he just has decreased sensation in the bottoms of both feet. No pain, tingling. He used to be extremely ticklish, now I can tickle his feet and he barely notices! We were at a waterpark this summer walking around barefoot on the concrete and the skin on the pads of his feet was hanging off and bleeding. I had to point out to him that he feet were bleeding to figure this out. He had no idea! That's when I decided we should have this looked in to.

He actually had his spinal tap yesterday. Is it normal for him to be having pretty bad pains in his neck today? They come and go and do seem to ease up somewhat when he lays on his side. His pain started as a headache and worked its way down to his neck. He isn't running a fever but just doesn't feel well.

I will look more into the nerve biopsy if it gets to that point. Thanks!

Lisa