The Kawasaki disease is an acute febrile disease to appear most commonly on infants. The diagnostic criteria of the Kawasaki disease is based on clinical manifestations in the definitive diagnosis, therefore it is very difficult to diagnose in early period of onset. Especially, the findings of neck lymphadenopathy and low density area at the retropharyngeal space need to be differential diagnose in particular other infectious diseases. In this report, we present a case of the Kawasaki disease that needed to be differential diagnosed with peritonsillar abscess.
