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Research suggests that about 12% of people in the U.S. have irritable bowel syndrome, including 5% of children 4 to 18, according to the National Institute of Diabetes and Digestive and Kidney Diseases.
Irritable bowel syndrome is a chronic condition that affects the large intestine. Signs and symptoms include cramping, abdominal pain, bloating, gas, diarrhea and constipation. Only a small number of people with irritable bowel syndrome have severe signs and symptoms.
Many people have occasional signs and symptoms of irritable bowel syndrome, but you're more likely to have the syndrome if you:
Treatment for irritable bowel syndrome focuses on relieving symptoms so that you can live as normally as possible. Some people can control their symptoms by managing diet, lifestyle and stress. More severe symptoms can be treated with medication and counseling.