# Concomitant Lymphocytic Colitis With Recurrent Clostridium difficile Infection

## TL;DR

A 70-year-old woman with recurring Clostridium difficile infection was also diagnosed with lymphocytic colitis, which resolved after proper treatment.

## Contribution

Highlights the clinical importance of diagnosing lymphocytic colitis alongside recurrent C. difficile infections.

## Key findings

- The patient's symptoms resolved after confirming and treating lymphocytic colitis.
- The case emphasizes the need to consider microscopic colitis in patients with persistent watery diarrhea.
- It suggests a potential relationship between C. difficile infection and microscopic colitis.

## Abstract

Microscopic colitis is a clinicopathological diagnosis that is characterized by chronic microscopic inflammation of the colon and presents with chronic watery diarrhea. There are following two subtypes of microscopic colitis: lymphocytic colitis and collagenous colitis. This is a case of a 70-year-old female with a history of Clostridium difficile infections who presented with persistent watery diarrhea and was diagnosed with lymphocytic colitis in the setting of a concomitant C. difficile infection. Given her clinical presentation, the patient was initiated on empiric treatment for C. difficile infection and showed a lack of clinical improvement with persistent watery diarrhea and elevated white blood cell count. The patient’s symptoms resolved upon the confirmatory diagnosis and treatment of lymphocytic colitis. This study illustrates the importance of assessing for, diagnosing, and treating lymphocytic colitis in patients with chronic non-resolving watery diarrhea, especially in the setting of concomitant or recurrent C. difficile infections. Additionally, it emphasizes the need for further characterization of the relationship between C. difficile infection and microscopic colitis.