Gastroenterology
Rome II irritable bowel syndrome calculator
Enter the published formula inputs below to calculate and interpret this score.
Clinical inputs
Allowed range: 0–52 weeks
At least 12 weeks, which need not be consecutive, in the preceding 12 months. Eleven weeks does not meet the criterion.
Result
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Clinical inputs
- Weeks with discomfort or pain in 12 monthsAccepted range: 0 to 52
- Abdominal discomfort or pain
- Relieved with defecation
- Onset with a change in stool frequency
- Onset with a change in stool form
- Structural or biochemical explanation present
- Abnormal stool frequency
- Abnormal stool form
- Abnormal passage
- Mucus with bowel movements
- Abdominal fullness, bloating, or swelling
Primary source
Thompson WG et al. Functional bowel disorders and functional abdominal pain. Gut. 1999;45(Suppl 2):II43-II47. DOI: 10.1136/gut.45.2008.ii43. PMID: 10457044. Irritable bowel syndrome is at least 12 weeks, which need not be consecutive, in the preceding 12 months, of abdominal discomfort or pain with two of three features: relieved with defecation; onset associated with a change in frequency of stool; onset associated with a change in form of stool. The diagnosis presumes no structural or biochemical explanation. Supportive symptoms are not required: fewer than 3 bowel movements a week or more than 3 a day; hard or lumpy stools or loose or watery stools; straining, urgency, or incomplete evacuation; mucus; and abdominal fullness, bloating, or swelling. (1999)
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