what are the symptoms of crohn's disease flare up
When Crohn's disease first begins, or during a flare-up, you might experience: 1  Abdominal pain, usually at or below the navel. It is typically worse after meals. 2  Diarrhea that may contain blood. 3  Sores around the anus.  Drainage of pus or mucus from the anus or anal 1  area. Pain when you have a bowel movement.  Mouth 1  sores. Loss of appetite.