Does anyone know whether Crohn's itself can cause positive ANA (1:160 titer)? Every website says positive ANA is either SLE or other connective tissue disease (or infection) but never seen Crohn's on the list. Plus, wouldn't they test for ANA to diagnose Crohn's if it can cause it? Also, what about
Humira? I've read that 12% of Humira users tested positive, but it didn't indicate the level.