I was diagnosed with IBS like 8 years ago or something... and it is severely exacerbated by anxiety. When I get hit with anxiety, it literally takes a matter of two seconds before I am running to the bathroom. Then I get into an awful cycle because the stomach problems make me anxious. There was time when the cycle of anxiety and stomach problems was so bad that I dropped to 98 lbs and refused to in in restaurants. I have come a long way from that, but I still cannot control my stomach going off so badly with anxiety-- however, the way I handle the anxiety has improved.