In the United States, it is estimated that 10-15 percent of the adult population suffers from IBS symptoms, yet only 5 to 7 percent of adults have been diagnosed with the disease. IBS is the most common disease diagnosed by gastroenterologists and one of the most common disorders seen by primary care physicians.
Constipation is a symptom-based disorder defined as unsatisfactory defecation, and is characterized by infrequent stools, difficult stool passage or both. Chronic idiopathic constipation (CIC) is defined as the presence of these symptoms for at least 3 months. Abdominal pain is a frequently reported symptom of IBS. It is not uncommmon for some IBS patients to experience nausea and vomiting especially when accompanied with abdominal cramping.