Fatal late cardiovascular sequelae of previously unrecognized Kawasaki disease in 12-year-old child

This case illustrates the potentially fatal long-term cardiovascular sequelae of unrecognized and untreated incomplete KD. Early recognition and treatment with IVIG are critical to reduce coronary complications. Healthcare providers must maintain clinical vigilance for patients with a history of KD. Even subtle or transient symptoms in patients with a history of KD should prompt immediate evaluation to prevent fatal outcomes.