Constipation is a change in a child's bowel movement pattern, which includes harder stools and/or a longer time between stools.
Crohn's disease is a recurring inflammatory disease of the gastrointestinal (GI) tract, like ulcerative colitis. Crohn's disease and ulcerative colitis are so similar that they are collectively referred to as inflammatory bowel disease (IBD).
Endoscopy is a process in which an endoscope, which is a lighted, flexible instrument that contains a computer chip and is attached to a TV monitor and camera, is inserted through a natural opening in the body (usually the mouth or anus). The endoscope examines the upper or lower gastrointestinal (GI) tract for any condition that can cause symptoms.
Gastroesophageal reflux disease (GERD)
The term gastroesophageal refers to the stomach and esophagus. Reflux means to flow back or return. Therefore, gastroesophageal reflux is the return of the stomach's contents (usually acid) into the esophagus, a condition that causes inflammation (irritation) and damage (e.g., ulcers) to the esophagus.
Gluten is the general name of the proteins found in wheat, rye, barley and other grains. It is the protein that must be avoided in celiac disease.
Helicobacter pylori infection
Helicobacter pylori (H. pylori) is a bacteria that causes more than 80 percent to 90 percent of all primary peptic ulcers. Peptic ulcers are sores on the lining of the stomach and duodenum (the beginning of the small intestine).
Hepatology includes the study of the liver and, usually, the diseases that can affect the liver. The body cannot live without the liver, which is responsible for a number of actions during digestion, making substances which help blood clot, and acting as a clearinghouse for all of the drugs and chemicals that are taken into the body.
Hirschsprung's disease, a birth defect, is the most common cause of intestinal blockage (obstruction) in the newborn period and later in infancy. It is a condition in which nerves that assist the natural movement of the muscles in the lining of the large intestine, or colon, are missing during fetal development.
Colitis is an inflammatory disease that occurs in the colon (large intestine) and is characterized by the inflammation and ulceration of the innermost lining of the colon.