Functional gastrointestinal (GI) disorders are clinical syndromes characterized by chronic or relapsing GI symptoms in the absence of structural or biochemical abnormalities that can be identified following a standard diagnostic work-up. The irritable bowel syndrome (IBS) and functional dyspepsia (FD) are the best recognized functional bowel disorders and both these disorders are highly prevale...

Gastrointestinal disorders represent are conditions frequently seen in primary care, usually associated with a poor quality of life, entailing increased direct and indirect costs. Disorders of the digestive tract frequently coexist with psychological impairment. Even in early times scientists were concerned about the influence of the mind over body, and that there are many theories that explain...