What are functional gastrointestinal diseases?
Functional diseases are those in which the GI tract looks normal when examined, but doesn’t move properly. They are the most common problems affecting the GI tract (including the colon and rectum). Constipation, irritable bowel syndrome (IBS), nausea, food poisoning, gas, bloating, GERD and diarrhea are common examples.
* Abdominal pain