Congenital Megacolon, also known as Hirschsprung's disease, is a condition where the large intestine fails to relax and evacuate stool properly due to a lack of nerve cells in the intestinal wall. This results in constipation, abdominal distention, and vomiting. There are several synonyms for Congenital Megacolon, such as Aganglionic Megacolon, Hirschsprung's Megacolon, and Congenital Aganglionic Megacolon. Other terms that may be used include Intestinal Hirschsprung Disease, Colonic Aganglionosis, and Intestinal Aganglionosis. Early diagnosis and prompt treatment are essential to prevent complications such as enterocolitis, perforation, and death. Therefore, it is important to be aware of different names that can be used to refer to this condition.