Irritable bowel syndrome

Irritable bowel syndrome (IBS) is a condition associated with changes in gastrointestinal function, with chronic or recurrent abdominal pain, diarrhea, bowel habits and abnormal stool characteristics as the main symptoms, and lack of gastrointestinal structure or biochemical abnormalities. The syndrome often coexists with other functional diseases of the gastrointestinal tract such as gastroesophageal reflux disease (GERD) and functional dyspepsia (FD).