Welcome to NeuroTalk Jeff.
I don't have knowledge in regard to that, but we have several other forums here that might offer some clues. There's the children's health forum:
http://neurotalk.psychcentral.com/forum9.html
Also the epilepsy and seizure disorder forum:
http://neurotalk.psychcentral.com/forum11.html
And the hydrocephalus forum:
http://neurotalk.psychcentral.com/forum14.html
Maybe if you pose this question in those forums as well you'll find some clues.
I'm sorry your son is having seizures. I hope it turns out to be something that can be treated with diet changes. Take care and give Jim a hug from me.