Steven Faber, MD, FACG, Scott Rigden, MD, Dan Lukaczer, ND
Irritable Bowl Syndrome (IBS) is defined as a functional gastrointestinal (GI) disorder that includes a combination of chronic or recurrent GI symptoms that cannot be explained by structural or biochemical abnormalities. Symptoms remain the only method of identifying IBS because a clear biologic marker for the disorder has not been found. The main symptom criterion is abdominal pain that is relieved by defecation or that is associated with changes in frequency or consistency of stools. Disturbed defecation, such as altered stool frequency, altered stool form, or passage of mucus may also be present in IBS. The Rome criteria is a highly sensitive and specific tool that is widely used for the purpose of diagnosing IBS.