I had the same issue, it really sucks, but I discovered that the cause of my own IBS was my own steroids, and a lack thereof.
I dicovered that I had low cholesterol, and cholesterol is used to make Cortisol, which suppresses inflammation and controls the immune system as well.
If you are one of the many posters here who have low cholesterol, you may want to try eating eggs to get some relief. I, and all the Crohns sufferers I know get a huge amount of relief from eggs, and all of us had low cholesterol.
Just give it a try, just for the hell of it, and see if it works. I slept soundly for the first time in a very very long time the first night I ate eggs. I rarely had eggs before that, due to the taste, but the only times Ive ever felt better just happened to be when I had eggs. Beef doesnt really help that much, and I think it has to do with metabolism of fat.
There have been several studies of Crohns which link cholesterol, or metabolism of fat and therefore of Cholesterol. Its worth a try, is it not?
Just remember not to have any caffeine when you do, because it interferes with cholesterol for some reason or another.