The consequences of Kawasaki - especially if undiagnosed - are severe. Coronary artery ectasia, which infrequently persists, can lead to spontaneous coronary th

The consequences of Kawasaki - especially if undiagnosed - are severe. Coronary artery ectasia, which infrequently persists, can lead to spontaneous coronary thrombosis in otherwise young healthy adults. In other words, healthy young adults can develop heart attacks as a consequence of this disease. This is documented in the article, but I'll emphasize that it's something we see (albeit rarely) in the real world.