A 15-month-old girl initially suspected of having Kawasaki disease is presented. The diagnosis was based on the combination of prolonged fever, conjunctivitis, edema of hands and feet, exanthem and lymphadenopathy. A workup for infectious etiologies was negative. She was subsequently found to have acetaminophen hypersensitivity. To our knowledge this clinical presentation of acetaminophen hypersensitivity has not previously been described in medical literature in English.