Other names: Diarrhea-Predominant IBS; Diarrhea-Predominant Irritable Bowel Syndrome; IBS-D
Irritable bowel syndrome with diarrhea (IBS-D), the diarrhea-predominant subtype of IBS, affects up to 40% of people with IBS. It is defined as abdominal pain or discomfort that is generally relieved by passing a bowel motion (defecation). More than 25% of the stools passed are loose or watery (Bristol Stool Form Score of 6-7) and hard or lumpy stools make up less than 25% of the bowel movements.