Should I take anti-diarrheal medication?

For non-infectious causes (IBS, food intolerance), loperamide is helpful. Avoid it for bloody diarrhea or suspected food poisoning, as it can delay pathogen clearance.

Stomach Pain and Diarrhea: Infectious, Functional, and Dietary Causes

Important Disclaimer

This guide is for informational purposes and does not replace professional medical advice. If you are experiencing a medical emergency, call 911 or your local emergency services immediately.

Overview

Cramping abdominal pain with diarrhea reflects increased gut motility and fluid secretion. The gut accelerates transit to expel irritants, causing cramping from strong intestinal contractions and diarrhea from inadequate water reabsorption.

Possible Causes

Gastroenteritis

common

Viral or bacterial gut infection causing cramping, watery diarrhea, and sometimes vomiting.

IBS-D

common

Diarrhea-predominant IBS causes recurrent episodes of cramping pain relieved by urgent loose stools.

View Condition Details

Food Intolerance

common

Lactose or fructose malabsorption causes osmotic diarrhea with cramping 30-120 minutes after consuming trigger foods.

When It Is Serious

Bloody diarrhea, severe dehydration signs, fever above 102°F, or symptoms persisting beyond 3 days without improvement.

When It's Likely Benign

Mild cramping with non-bloody diarrhea following a dietary indiscretion that resolves within 48 hours.

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Frequently Asked Questions

Related Resources

Stomach Pain Guide Diarrhea Guide

Medically Reviewed for Accuracy

Medical Advisory Board

•Last reviewed: March 20, 2026

Content is aligned with established clinical guidelines from authoritative medical institutions, including MedlinePlus (U.S. National Library of Medicine), the CDC, the NIH, and the NHS. All content is reviewed by our medical advisory board for accuracy and safety.