Table 2.

. Novel classifications for irritable bowel syndrome (IBS)

Asian functional gastrointestinal disorder symptom clusters: Clusters with IBS‐like symptomatology 12

Subgroup of patients with IBS based on gastrointestinal symptoms and psychological profiles 13

F2: Abdominal pain or discomfort starting with more frequent or looser stools with improvement of symptom after bowel movement, and. F3: Epigastric pain or burning affected by eating, which gets better after bowel movement or passing gas and preceded by a change in the number of bowel movements F7: Upper abdominal pain or discomfort associated with passing less frequent or passing harder stools

Cluster 1: Diarrhea and urgency with low psychological burden Cluster 2: Low overall GI symptom severity with high psychological burden Cluster 3: Low overall GI symptom severity with low psychological burden Cluster 4: Diarrhea, abdominal pain, and urgency with high psychological burden Cluster 5: Constipation, abdominal pain, and bloating with high psychological burden Cluster 6: High overall GI symptom severity with high psychological burden Cluster 7: Constipation and bloating with low psychological burden