I had fistulizing crohn's when I was originally diagnosed several years ago, and the only thing that cleared them up was Remicade. I took Remicade for several years and LOVED it, before it "wore off". I didn't have any luck with Humira. Have you tried Remicade?
The only other thoughts I have would be food allergy testing... I know it's just one more blood test to be annoyed by, but maybe you have food sensitivities or something? I found out that I have a soy-intollerance, so all those nights I spent drinking Ensure weren't doing me any good because of the soy in them. This disease is such a pain!
Hope you feel better soon!
27f, dx'd CD July '05 after 6 fistula/abscess surgeries
(miscarried at 13 weeks, now waiting to heal before trying again)
Stopped Humira August 22nd, 2008.
Went Gluten-Free, noticing some definite improvement.
Started LDN October 27th, and already LOVING IT.
"Our greatest fear is not that we are inadequate, but that we are powerful beyond measure."