MDCalc

Kruis Score for Diagnosis of Irritable Bowel Syndrome (IBS)

Determines presence of IBS using clinically significant weighted criteria.

Symptoms of abdominal pain, flatulence, or bowel irregularity
Symptom duration > 2 years
Pain described as burning, cutting, very strong, terrible, feeling of pressure, dull, boring, or 'not so bad'
Alternating constipation and diarrhea

Red Flags

Abnormal physical findings or history pathognomonic of other disease
ESR > 10 mm/hr
WBC > 10,000/µL
Hemoglobin (female < 12 g/dL; male < 14 g/dL)
History of blood in stool

Result:

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Advice
  • If IBS is confirmed, a trial of IBS-related medications (antispasmodics, fiber) may be appropriate.
  • If IBS is not confirmed, further evaluation may be indicated, like CT or ultrasound imaging, HIDA scan, endoscopy, or further blood testing.
Management

Refer to ACG guidelines for management of acute diarrheal infections in adults.

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