Diagnostic Criteria for Irritable Bowel Syndromea
Recurrent abdominal pain or discomfortb at least 3 days per month in the last 3 months associated with two or more of the following:
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aCriteria fulfilled for the last 3 months with symptom onset at least 6 months before diagnosis.
bDiscomfort means an uncomfortable sensation not described as pain. In pathophysiology research and clinical trials, a pain/discomfort frequency of at least 2 days a week during screening evaluation is required for subject eligibility.
Source: Adapted from Longstreth GF et al: Functional bowel disorders. Gastroenterology 130:1480, 2006.