bowel_change

Chronic Diarrhea of Unknown Origin

Also called: Not applicable.

Chronic diarrhea of unknown origin refers to the persistent passage of loose, watery stools for more than four weeks, for which a specific cause cannot be identified after a comprehensive medical workup. This diagnosis of exclusion can be challenging and frustrating, often involving a stepwise investigation to rule out a wide range of potential causes, from common functional disorders like IBS-D to rarer conditions. Management focuses on symptom control through diet, medication, and lifestyle adjustments while continuing to search for an underlying etiology.

Frequently asked questions

Could my chronic diarrhea be cancer?
While it's a common concern, colorectal cancer is an infrequent cause of chronic watery diarrhea, especially in the absence of other alarm symptoms like bleeding or weight loss. A colonoscopy is a key part of the evaluation to definitively rule out cancer and pre-cancerous polyps.

If all my tests are normal, does that mean it's just IBS?
Yes, if a comprehensive evaluation has ruled out other causes, a diagnosis of Irritable Bowel Syndrome with Diarrhea (IBS-D) is often made. IBS is a positive clinical diagnosis based on symptom criteria, but it is also a diagnosis of exclusion in practice. Effective treatments are available to manage the symptoms of IBS-D.

Can stress cause chronic diarrhea?
Stress does not directly cause chronic diarrhea in the sense of causing an underlying disease, but it can significantly worsen symptoms in functional bowel disorders like IBS through the complex gut-brain connection. Stress management techniques can be an important part of a comprehensive treatment plan.

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