What is an IBS attack?

Dr Sarah Jarvis MBE Irritable bowel syndrome (IBS) is a long-term (chronic) condition of the gut (bowel) that causes episodes of tummy (abdominal) cramps, bloating and either constipation or diarrhoea. IBS is a problem with how the bowel works. There is otherwise nothing wrong with the bowel. https://patient.info/health/irritable-bowel-syndrome-leaflet#nav-1