Chikungunya mimicking atypical Kawasaki disease in an infant.

We report a 4-month-old boy with seizure, a 1-day history of fever, and a generalized maculopapular rash on the trunk and limbs. In very young children, acute chikungunya infection can mimic Kawasaki disease, and its prompt diagnosis, particularly in an endemic area like Singapore, may avoid the administration of costly and unnecessary intravenous immunoglobulin therapy.