"The diagnosis of a functional bowel disorder always presumes the absence of a structural or biochemical explanation for the symptoms." Please answer the questions and click the button. Please do NOT use this questionnaire to diagnose yourself but instead if you think you may have irritable bowel syndrome book an appointment to see your GP.
Remember that weight loss, anaemia, gastrointestinal bleeding or an abdominal mass suggests an alternative diagnosis. In this case you should certainly book an appointment to see your GP.