It is not clear what causes irritable bowel syndrome, or IBS, but certain factors seem to make some people more vulnerable than others. Risk factors for IBS include:
Sex. About twice as many women as men suffer from IBS, reports the American College of Gastroenterology. Researchers aren't sure why this is so, but they suspect that changing hormones in the female menstrual cycle may have something to do with it.
Age. IBS can affect people of all ages, but it is more likely...
The standard diagnostic guideline for IBS, called the Rome III criteria, requires that you have these symptoms for at least 12 weeks during the past 6 months. But most doctors don't follow that requirement closely, says Philip Schoenfeld, MD, MSEd, MSc. He is co-author of the American College of Gastroenterology's IBS treatment guidelines.
Schoenfeld says it's tough for patients to remember the exact number of weeks they had symptoms in the preceding year. He suggests that people not wait. Instead, see a doctor whenever you have recurrent symptoms.
Doctors can determine whether your symptoms are IBS or signs of another problem. IBS is often confused with other illnesses, so doctors will need to ask questions and perform tests to confirm a diagnosis.
Philip Schoenfeld, MD, MSEd, MSc, co-author of the American College of Gastroenterology's "Evidence-Based Guidelines on the Management of Irritable Bowel Syndrome."
Current Psychiatry Web site.
National Digestive Diseases Information Clearinghouse: "Irritable Bowel Syndrome."