Irritable bowel syndrome differential diagnosis
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Differentiating Irritable bowel syndrome from other Diseases |
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Editor-In-Chief: C. Michael Gibson, M.S., M.D. [1]
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Overview
Differentiating Irritable Bowel Syndrome from other Diseases
American Gastroenterological Association Guidelines for Diagnosis of IBS
The American Gastroenterological Association has published a set of guidelines for tests which physicians should perform prior to diagnosing irritable bowel syndrome.[1] The following tests are meant to exclude other causes, such as infection and colon cancer.
- History and physical examination
- Diagnostic testing
- CBC
- Chemistry panel
- Sedimentation rate
- Stool for O & P
- Stool for occult blood
- Flexible sigmoidoscopy
- IF > 50, colonoscopy or barium enema and sigmoidoscopy
- For diarrhea predominant:
- Small bowel radiograph
- Lactose/dextrose H2 breathing test
- For constipation predominant:
- Fiber trial
- For pain predominant:
- Plain film of abdomen
Diseases with similar symptoms
- Celiac disease
- Diverticulitis
- Endometriosis
- Gallstones
- Gastroesophageal reflux disease (GERD)
- Inflammatory bowel disease
- Lactose intolerance
- Thyroid disease