Hi i'm new to all this so i need some help. My 14 year old daughter was just diagnosed with undetermined colitis after being sick for a year (possibly chron's) her whole bowel was inflamed.She was put on predisone for a month and then sulfalazine 2 tablets twice a day. She was ok for a few weeks and now she has had diarrhea for the last week . She also has had the flu for a few days so i don't know if we should go back to the doctor or not before things get out of control again. I'm new to this so i dont know what to do. thanks