Welcome to NT, Kate.

We have a peripheral neuropathy forum here. But I don't recall a youngster ever posting here.

There is exciting and useful information being implemented in medicine today regarding Vit D. Many people (it is thought at least 1/2 of the population) may be very low in this vitamin, which is not really a vitamin but a complex molecule that has neuroimmunological actions.

In Australia they are starting to test and treat this:
http://www.abc.net.au/catalyst/stories/2514231.htm

In USA there is also a beginning movement to fix this problem.
Please watch these programs too:
http://www.youtube.com/watch?v=bsxXzfowOtk
http://www.youtube.com/watch?v=TQ-qe...eature=related

We had a poster Mark at PN here who had a neuropathy that was body wide. Finally he had his D levels checked, and started supplements and within a month his symptoms were gone.

Diabetes type I is connected to low Vit D status. So I would strongly suggest you investigate this with your son's doctors.
There are other supplements for diabetic neuropathy, but I have never seen any papers done on children as yet. So going there is problematic dose wise, etc. I'd check the Vit D issue first, as it might really help.