How is he doing? Jenjen gave you some good advice. My heart goes out to you and he is lucky to have a Mom he can confide in.
If you go down to the bottom right of this page you'll find the Thomas recipe. Take from it what you can. Hot hot baths with Epsom salts help a lot. Make sure he stays hydrated. Gatorade or something similar. Imodium is a must. It not only helps with the bathroom issues, it helps ease other symptoms as well. Ask him to get on this site himself. The emotional support from these great people on here will really help. Others will be along with other tips soon. Hang in there. Both of you.