Sheryl, I'm glad you found us here at NeuroTalk. This is a great place for info and support.
I'm so sorry about your dear son. I'm sure you would trade places with him in a heartbeat. Its so hard to see our children suffer. What a mystery that nothing seems to help and the docs can't seem to pin down his disease.
Great news that he will be able to graduate from HS! Please keep searching every avenue you can think of -- keep trying! I hope you'll have success soon and a treatment for him. Please check back here often and let us know how you are both doing.