Related Experiment Video
Updated: May 14, 2026

Perturbations of Circulating miRNAs in Irritable Bowel Syndrome Detected Using a Multiplexed High-throughput Gene Expression Platform
Published on: November 30, 2016
Symptomatic overlap between microscopic colitis and irritable bowel syndrome: a prospective study
Rami Abboud1, Darrell S Pardi, William J Tremaine
1Division of Gastroenterology and Hepatology, Mayo Clinic, Rochester, Minnesota 55905, USA.
Many patients with microscopic colitis meet diagnostic criteria for irritable bowel syndrome (IBS). This suggests IBS criteria alone are insufficient for diagnosing microscopic colitis, necessitating further investigation for watery diarrhea.
Area of Science:
- Gastroenterology
- Internal Medicine
- Clinical Diagnostics
Background:
- Microscopic colitis and Irritable Bowel Syndrome (IBS) are frequent causes of watery diarrhea and abdominal discomfort.
- Existing research indicates significant symptom overlap between microscopic colitis and IBS.
- A prospective study was designed to investigate this overlap.
Purpose of the Study:
- To prospectively evaluate the overlap between microscopic colitis and Irritable Bowel Syndrome (IBS) diagnostic criteria.
- To determine the proportion of microscopic colitis patients meeting IBS criteria.
- To compare clinical characteristics of patients with and without IBS criteria.
Main Methods:
- A prospective cohort of 120 patients with biopsy-proven microscopic colitis was studied.
- Patients completed a symptom questionnaire to assess Irritable Bowel Syndrome (IBS) diagnostic criteria.
- Clinical characteristics were compared between patients meeting and not meeting IBS criteria.
Main Results:
- Between 38% and 58% of microscopic colitis patients met Irritable Bowel Syndrome (IBS) diagnostic criteria.
- Patients meeting IBS criteria were generally younger and more frequently female.
- This highlights a substantial overlap in symptom presentation.
Conclusions:
- Microscopic colitis patients frequently fulfill Irritable Bowel Syndrome (IBS) diagnostic criteria.
- IBS criteria are not specific enough to rule out microscopic colitis.
- Colonoscopy with biopsies is recommended for unexplained watery diarrhea unresponsive to treatment.
Related Concept Videos
Irritable Bowel Syndrome
Irritable Bowel Syndrome II: Clinical Features and Diagnostic Evaluation
Irritable Bowel Syndrome (IBS) is classified into subtypes based on the predominant bowel habits as determined by the Bristol Stool Form Scale (BSFS). The subtypes are:
Irritable Bowel Syndrome I: Introduction
IBS is a chronic condition that can persist over a long period or recur frequently.
The pathogenesis of IBS involves a complex interplay of the following factors:
Altered...
Chronic Bowel Disorders: Introduction
Irritable Bowel Syndrome (IBS) is a common disorder affecting the gastrointestinal tract. The distinctive feature is recurrent abdominal pain associated with altered bowel movements, manifesting as constipation, diarrhea, or fluctuating between both. The...
Inflammatory Bowel Disease I: Introduction
Inflammatory Bowel Disease IV: Clinical Manifestations

