I have a different theory. I don't want to scare you but I had a bad reaction to 6-mp (the sister drug). It started off with mouth ulcers. My GI didn't seem to be concerned and told me to see my Primary doctor. After several weeks of trying different meds to treat the ulcers with nothing working I decided to go to the ER. I was in so much pain, I couldn't eat or drink. My mouth would be glued shut in the morning because they would ooze and then dry up. Turns out my bone marrow had shut down and all my blood counts were low. I was in isolation for over a week.
I don't know if this is it but please make sure that you stay on top of it. Make sure your blood count is okay.
Vicky / 49 years old
DX'd with Crohn's during a resection August 2006
DX'd with Steriod induced Diabetes November 2006
Considered in Clinical remission but have minor signs of disease activity
Daughter (28) also has Crohn's since she was 12.
Currently on 4000mg of Pentasa only for Crohn's
No longer able to take 6-MP because of Bone-Marrow Suppression
Cymbalta, Metformin, Lipitor, Lisinopril