I have Crohn's and IBS. I sometimes have difficulty telling the difference between the symptoms of the two, as for me they can be very similar. In my experience, it seems as though the two are heavily correlated but there are differences in what causes my symptoms to flare. For me, the symptoms of IBS are exacerbated by stress and anxiety. Sometimes, dealing with my anxiety and trying to ground myself makes a huge difference in managing IBS symptoms. My doctor struggles with the difference between the two as well. Gastrointestinal pandemonium.