###Human: What is causing diarrhea after eating a spicy dish? ###Assistant: Hello. It seems to be a post-infectious irritable bowel syndrome. Due to infection, normal bacterial flora of the body which is present in the intestine is lost. That is why you are getting such symptoms. These symptoms should go away after a few weeks. If not, then you need to do some investigations to look for the cause. Post-infectious irritable bowel syndrome. Tablet Bifilac twice a day for five days.