I was having this problem just last month during a flare up. I had some hydration therapy at the hospital and oddly enough, I stopped having to pee every 5 seconds. Gained 6 pounds in 15 hours from all the IV fluids, but it actually stopped the frequent urination problem. I'm on Entorcort, but I've been on it before, and have never noticed it causing this problem. Are you having a lot of D? Is it possible you're dehydrated?
DX: mild to moderate Crohn's for 34 years
Additional benefits: chronic anemia, B12 deficient, peripheral neuropathy, facial mylagsia, joint pain, underactive thyriod
Current meds: Colozal, Nexium, Entocort, Flagyl, steriod cream, monthly B12 injections, Neurontin, Synthroid, Effexor ER, pain meds as needed