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Why is a colonoscopy used to see what is causing diarrhea?

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If your doctor needs more information to figure out what's going on, you may need to have a test called a colonoscopy. Your doctor will use a snake-like tube that lets him see the walls of your colon and rectum.

From: Treatment for Diarrhea WebMD Medical Reference

SOURCES: 

Cary G. Sauer, MD, assistant professor of pediatrics, Emory School of Medicine, Atlanta. 

CDC.

UpToDate.

Cleveland Clinic: "Diarrhea," "Mom's Advice Is Still the Best for Treating Diarrhea."

FamilyDoctor.org: "Anti-diarrheal Medicines: OTC Relief for Diarrhea."

Mayo Clinic: "Diarrhea: Treatment," “Diarrhea: When to see a doctor.”

Wayne State University Physician Group: "Nausea and Vomiting."

Reviewed by Nayana Ambardekar on August 6, 2019

SOURCES: 

Cary G. Sauer, MD, assistant professor of pediatrics, Emory School of Medicine, Atlanta. 

CDC.

UpToDate.

Cleveland Clinic: "Diarrhea," "Mom's Advice Is Still the Best for Treating Diarrhea."

FamilyDoctor.org: "Anti-diarrheal Medicines: OTC Relief for Diarrhea."

Mayo Clinic: "Diarrhea: Treatment," “Diarrhea: When to see a doctor.”

Wayne State University Physician Group: "Nausea and Vomiting."

Reviewed by Nayana Ambardekar on August 6, 2019

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How can you feel better when you have diarrhea?

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THIS TOOL DOES NOT PROVIDE MEDICAL ADVICE. It is intended for general informational purposes only and does not address individual circumstances. It is not a substitute for professional medical advice, diagnosis or treatment and should not be relied on to make decisions about your health. Never ignore professional medical advice in seeking treatment because of something you have read on the WebMD Site. If you think you may have a medical emergency, immediately call your doctor or dial 911.

    This tool does not provide medical advice. See additional information.

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