Hi- I think he may have Achalasia .This disorder is caused by failure of the LES ( Lower Esophageal Sphincter) to relax and failure of the esophagus to advance food into the stomach. This disease is relatively uncommon in children, it seems to be increasing in frequency. Two thirds of affected children are boys. Most children with achalasia present with symptoms of several months’ to several years’ duration consisting typically of vomiting of undigested food.

The diagnosis usually is suspected after an upper GI series shows narrowing at the LES with a large esophagus above it (bird beak deformity) . In addition, there is no relaxation of the LES on UGI study.

You don't need to take him to the Emergency Room. You can take him or talk about it to his Pediatrician or his Physician to rule out possibility of Achalasia.

Please click the Accept button if my answer is helpful to you. A positive Feedback rating and a Bonus will be greatly appreciated.

Regards,

Dr.Yetimyan