At present physicians focus their medicine studies in well defined illnesses as peptic ulcer, gastric cancer, ulcerative colitis and so on. However, patients reveal their discomfort to us, that is their symptoms or group of symptoms (syndromes).For this reason, our concern for many years has been the study of symptoms and syndromes. In this review we will be looking at the concepts and information gathered with respect to intestinal gases, clinically known as flatulence.