Acquired megacolon in children most commonly due to-
Psychological problems
Bad bowel habit
Chaga's disease
Hirschsprung's disease
Ans. is 'b' i.e., Bad bowel habit Megacolon Megacolon is an abnormal dilatation of colon that is not caused by mechanical obstruction. Two main types of megacolon are ? 1) Congenital megacolon --> Hirschsprung disease 2) Acquired megacolon Poor bowel habit Infections --> chaga's disease Idiopathic Medication Antipsychotic drugs