
A 5-year-old boy with a history of asthma presented for a 1-year history of multiple episodes of emesis. What's the diagnosis?
Leah K. Middelberg, MD, FAAP, is an assistant professor of pediatrics in the Division of Emergency Medicine at Nationwide Children’s Hospital, Columbus, Ohio.

A 5-year-old boy with a history of asthma presented for a 1-year history of multiple episodes of emesis. What's the diagnosis?