Gas - flatulence


Gas is air in the intestine that is passed through the rectum. Air that moves from the digestive tract through the mouth is called belching.

Gas is also called flatus or flatulence.


Gas is normally formed in the intestines as your body digests food.

Gas can make you feel bloated. It can cause crampy or colicky pains in your belly.


Gas can be caused by certain foods you eat. You may have gas if you:

Other common causes of gas are:

Home Care

The following tips may help you prevent gas:

When to Contact a Medical Professional

Call your health care provider if you have:

What to Expect at Your Office Visit

Your provider will perform a physical exam and ask questions about your medical history and symptoms, such as:

Tests that may be done include:

Review Date: 5/21/2016
Reviewed By: Linda J. Vorvick, MD, Medical Director and Director of Didactic Curriculum, MEDEX Northwest Division of Physician Assistant Studies, Department of Family Medicine, UW Medicine, School of Medicine, University of Washington, Seattle, WA. Also reviewed by David Zieve, MD, MHA, Isla Ogilvie, PhD, and the A.D.A.M. Editorial team.

This information should not be used during any medical emergency or for the diagnosis or treatment of any medical condition. A licensed medical professional should be consulted for diagnosis and treatment of any and all medical conditions. Call 911 for all medical emergencies. © 1997- 2007 A.D.A.M., Inc. Any duplication or distribution of the information contained herein is strictly prohibited.