Table 2 Subtyping IBS using the predominant stool pattern [17]
From: Anxiety-depressive disorders among irritable bowel syndrome patients in Guilan, Iran
IBS with constipation (IBS-C) | Hard or lumpy stools for ≥ 25% of bowel movements and loose (mushy) or watery stools for < 25% of bowel movements. |
|---|---|
IBS with diarrhea (IBS-D) | Loose (mushy) or watery stools for ≥ 25% of bowel movements and hard or lumpy stool for < 25% of bowel movements. |
Mixed IBS (IBS-M) | Hard or lumpy stools for ≥ 25% of bowel movements and loose (mushy) or watery stools for ≥ 25% of bowel movements. |
Unsubtyped IBS | Insufficient abnormality of stool consistency to meet criteria for IBSC, IBS-D or IBS-M. |