Table 1 Rome IV diagnostic criteria for irritable bowel syndrome with diarrhoea

Meet Rome IV criteria for IBS-D for the past 3 months:

- Recurrent abdominal pain at least weekly

- Pain is associated with two or more of the following; related to defaecation, associated with a change in frequency of stool, associated with a change in form of stool

- Symptoms onset at least 6 months prior to diagnosis

- Abnormal stools are loose (BSFS 6 or 7) in > 25% of cases but are hard (BSFS 1 or 2) in < 25% of cases