Everyone has had a stomach ache in their life, but some people can experience chronic gastrointestinal issues that cause many unpleasant symptoms. Functional gastrointestinal disorders cause the GI tract to malfunction but do not change the appearance of the bowel. Structural GI problems lead to physical changes in the bowel's appearance. Typically, these conditions cause symptoms like abdominal pain, gas, bloating, diarrhea, and constipation. Irritable bowel syndrome (IBS), ulcerative colitis, gastroesophageal reflux disease (GERD), and Crohn's disease are all common gastrointestinal disorders. Learn more about risk factors for these conditions at Canada Med Pharmacy.