<prompt> The most dreadful complication of Kawasaki disease isRashLymph nodeCardiac involvementThrombocytosis  <response>: Kawasaki disease is an acute, febrile, usually self-limited illness of infancy and childhood 80 of the patients are younger than 4 years of age associated with an aeritis of mainly large to medium-sized vessels. Its clinical significance stems from the involvement of coronary aeries. Coronary aeritis can cause aneurysms that rupture or thrombose, resulting in myocardial infarction. Robbins basic pathology,9th edition,pg no.352 