<prompt> Acquired megacolon in children most commonly occurs due to:Psychological problemsBad bowel habitChagas diseaseHirschsprungs disease  <response>: Megacolon:abnormal dilatation of colon that is not caused by mechanical obstruction Types of megacolon: Congenital megacolon- Hirschsprung disease Acquired megacolon: Poor bowel habit MC, infections Chagas disease, idiopathic, antipsychotic drugs. 