Rome IV Criteria for Irritable Bowel Syndrome
Rome IV diagnostic criteria for irritable bowel syndrome: recurrent abdominal pain plus two of three defecation-related features, with the IBS-C/D/M/U subtype.
Open the calculator → Runs in your browser. Data leaves only if you deliberately send a problem report from the interactive tool.
Example
- Recurrent pain ≥ 1 day/week
- Yes
- Symptom onset ≥ 6 months prior
- Yes
- Pain related to defecation
- Yes
- Associated with a change in stool frequency
- Yes
- Predominant stool pattern
- IBS-D (diarrhea-predominant)
Result: Rome IV criteria for IBS MET — IBS-D (diarrhea-predominant: > 25% loose/watery, < 25% hard/lumpy).
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What the result means
- Subtypes
- IBS-C / IBS-D / IBS-M / IBS-U by the predominant Bristol stool pattern on days with an abnormal bowel movement. Assumes alarm features absent; does not exclude organic disease.
What you enter
- Recurrent pain ≥ 1 day/week (last 3 months)
- Symptom onset ≥ 6 months prior
- Pain related to defecation
- Associated with a change in stool frequency
- Associated with a change in stool form
- Predominant stool pattern (subtype)
How this is calculated
- Criteria
- recurrent abdominal pain ≥ 1 day/week in the last 3 months (onset ≥ 6 months prior), with ≥ 2 of: related to defecation, change in stool frequency, change in stool form.
Lacy BE, Mearin F, Chang L, et al. Bowel disorders. Gastroenterology. 2016;150(6):1393-1407. Read the source ↗
A reference and educational tool. Not medical, legal, or financial advice, and not a substitute for clinician judgment.