Pediatric gastroenterology is a combination of both gastroenterology and pediatrics. Pediatric gastroenterology is concerned with the treatment of gastrointestinal tract, liver and pancreas of children from infancy to adolesence. The principle diseases concerned with pediatric gastroenterology are acute diarrhoea, gastritis, persistent vomiting and problems with the development of the gastric tract. Pediatric gastroenterology developed as a sub-specialty of pediatrics and gastroenterology. It is concerned with treating the gastrointestinal tract, liver and pancreas of children from infancy until age eighteen.