How Valuable Is the Application on Consensus Guidelines in the Management of Functional Gastrointestinal Disorders?

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Abstract
When patients complain of problems, physicians are used to look for some physical or physiological abnormality ruling out infections, inflammatory or cancer. Unfortunately, when we talk about functional disorders we usually cannot observe any defects and it is only possible for us to know of them through the words of our patients. Developing criteria and guidelines is not an easy process, in particular for functional gastrointestinal diseases, when no disease-based biological markers exist. It is difficult to define a medical disorder in the absence of a biological ‘gold standard’. The Rome II classification is based on the assumption that for each disorder there are symptom custers. Symptoms have in common disturbances in sensory and/or motor gastrointestinal function, which sometimes may overlap across anatomic regions. Nevertheless, several studies provide evidence for site-specific syndromes.