This is one of those rare life threatening emergencies in children in which diagnosis and management is time critical. Also, rarely, the treatment is not surgical and here is a great video by Prof Larry Mellick on air/barium insufflation of an intussusception for those who have never seen one.
More of his videos here.
- most present in first 3 months of life
- intermittent abdo pain is most common symptom
- red currant jelly and vomiting with abdo pain is only 25% of time
- examination while crying is of limited value
Ref: An Evidence-Based, Systematic Approach ToAcute, Unexplained,Excessive Crying In Infants. EMpractice.net