Causes of intestinal obstruction
  Mechanical Non-mechanical
Adhesion bands (following previous abdominal operation or peritonitis)


Post-operative paralytic ileus (after abdominal surgery)

Hernia
Peritonitis

Volvulus (particularly sigmoid volvulus)

Spinal injury

Neoplasms
Drugs, hypokalaemia

Intussusception (especially in children)

Bowel ischaemia