*Perforation of the colon *Sepsis *Shock Emergency action may be required if severe abdominal pain develops, particularly if it is accompanied by fever, rapid heart rate, tenderness when the abdomen is pressed, bloody diarrhea, frequent diarrhea, or painful bowel movements. Colonoscopy is contraindicated, as it may rupture the dilated colon resulting in peritonitis and septic shock.
picture of Megacolon
symptom of Hiatal hernia
symptom of Necrotizing enterocolitis
symptom of Hirschsprung's disease
picture of Diverticulitis
symptom of Intussusception 
complications of Intussusception 
symptom of Klippel–Feil syndrome