NorCalJP
Hi! I also have crohns disease and I am bipolar.
Whenever I had a crohns flare, I had to go on the steriods.
Yes they did throw me into a manic state.
I asked my GI about alternate drugs for my flare ups and he told me there is no way I am going to go into a flare up without being on steriods. He said you cannot have crohns disease without being put on steriods from time to time.
If you have to be on the steriods for longer than a couple of weeks, I would talk to your Psych and see what med changes he/she can make for you temporairly to help you get a handle on things.
Good Luck. ~Sukay~