Ah, a thread I can relate to!
I use an insulin pump to control my diabetes. The steroid-based meds really made my sugars hard to control. My sugars usually run very consistant (around 120 average) and it was hard to bring them down below 240 when on Prednisone and Entocort (even on the lowest doses.) Because of this, I went on Remicade. Bloodsugars have returned to more normal levels and I have been in pretty good health since going on it (only 3 infusions so far.)
A lot of my disease is low down in the colon/anus. I screwed around with all sorts of enemas and suppositories, tried Pentasa, none of it worked worth a darn. When it progressed into more of my GI tract, and the joint pain/swelling/arthritis finally became unbearable, I went on the Remicade. Very happy with it so far. Next infusion in 2 weeks.
Best of luck to you! That's a tough combo for such a little guy to deal with. Be on the lookout for gluten sensitivity as well with his diet. That seems to coincide with all of this too. My Celiac disease/gluten intolerance was diagnosed a couple years before the Crohn's.
Type I Diabetes- 29 yrs. (MiniMed Insulin Pump)
Celiac Disease- 8 yrs.
Crohn's Disease- (Nov. '06)
Remicade (First Infusion 11/3/08)