I have been on Humira for a year and a half. I have had sinus infections and similar patchy-dry areas which come and go. But I have not had that severe abdominal pain. Except once when I was on antibiotics and Humira, causing severe constipation. I find taking Metamucil helps me be more regular. I go from diarrhea with a flare to constipation when I am doing fair. So, its not ever quite "normal" but its normal for me. Good luck! I am waiting to get results for Humira anibody levels and 6-MP levels because I developed a severe redness to my gums along with a rash on my abdomen and feeling a lump in my throat every time I swallow...anyone have this kind of reaction to Humira or 6-MP. My ears are also acting up.