Health topic · Gastroenterology

Irritable Bowel Syndrome

MedlinePlus, National Library of Medicine · Retrieved 2026-10-13

Irritable bowel syndrome (IBS) is a problem that affects the large intestine. It can cause abdominal cramping, bloating, and a change in bowel habits. Some people with the disorder have constipation. Some have diarrhea. Others go back and forth between the two. Although IBS can cause a great deal of discomfort, it does not harm the intestines. IBS is common. It affects about twice as many women as men and is most often found in people younger than 45 years. No one knows…

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Reference details

MedlinePlus topic groups
Digestive System
Also called
IBS; Irritable colon
MeSH terms
Colonic Diseases, Functional
XML release date
10/13/2026 02:30:36

Overview

Irritable bowel syndrome (IBS) is a problem that affects the large intestine. It can cause abdominal cramping, bloating, and a change in bowel habits. Some people with the disorder have constipation. Some have diarrhea. Others go back and forth between the two. Although IBS can cause a great deal of discomfort, it does not harm the intestines. IBS is common. It affects about twice as many women as men and is most often found in people younger than 45 years. No one knows the exact cause of IBS. There is no specific test for it. Your doctor may run tests to be sure you don't have other diseases. These tests may include stool sampling tests, blood tests, and x-rays. Your doctor may also do a test called a sigmoidoscopy or colonoscopy. Most people diagnosed with IBS can control their symptoms with diet, stress management, probiotics, and medicine. NIH: National Institute of Diabetes and Digestive and Kidney Diseases

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Retrieved: 2026-10-13. Text has been organized for reading; this import has not been independently reviewed by a clinician. It is not individualized medical advice.
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