Microscopic colitis causes chronic watery diarrhea with normal colonoscopy appearance but characteristic changes on biopsy (collagenous or lymphocytic colitis). NSAIDs, PPIs, and smoking are risk factors; budesonide is effective treatment.
Describe your symptoms and get a structured AI clinical assessment — possible causes, urgency level, and recommended next steps.
Start Free AI Analysis →Content on this page is informed by evidence-based clinical sources including: