Follow-Up of Microscopic Colitis Patients and Diarrhea Controls at 1 Year

Area of Science:

• Gastroenterology
• Internal Medicine
• Clinical Research

Background:

• Microscopic colitis (MC) is a frequent cause of chronic diarrhea, yet its clinical trajectory is not well-defined.
• Understanding MC patient management in real-world practice is crucial for improving outcomes.

Purpose of the Study:

• To assess the treatment of microscopic colitis patients in routine clinical practice.
• To compare the symptom burden of MC patients with those experiencing other forms of chronic diarrhea at one-year follow-up.

Main Methods:

• A case-control study involving patients undergoing colonoscopy for diarrhea evaluation.
• Classification of patients into MC cases and non-MC controls by a study pathologist.
• One-year post-colonoscopy interviews with cases (n=74) and controls (n=162) to assess diagnosis awareness, medication use, and symptom severity.

Main Results:

• At one-year follow-up, 10% of MC cases were unaware of their diagnosis, and 60% received medication for diarrhea.
• MC cases reported symptoms including fecal urgency (40%), weight loss (32%), and fecal incontinence (21%); 46% were treated with budesonide.
• Controls exhibited worse symptoms than MC cases, indicated by a higher Microscopic Colitis Disease Activity Index score (median 3.0 vs 2.3) and more frequent stools, urgency, incontinence, and abdominal pain.

Conclusions:

• Opportunities exist to enhance the management of microscopic colitis, a chronic condition.
• Improved patient awareness of MC diagnosis and persistent symptom management are key areas for intervention.
• Controlling symptoms in other chronic diarrhea conditions may require different strategies compared to MC.