I have psoriatic arthritis and started back on Humira a few months ago. Glad to say the Humira is really helping my joint again but now I have a new problem - every time I eat anything at all my stomach swells all up like a balloon. Just wondering if anyone out there with arthritis who in on a TNF blocker has ever had this problem. I hate the thought of more tests but this is driving me crazy. I gel like my stomach is going to explode no matter how little I eat or what I eat.