It is treated with aspirin and gamma globulin. Jett Travolta did not die from Kawasaki disease.It does not cause seizures.He had it when he was two years old and it did nothing to his brain.It affects the heart and skin and clears up very nicely when treated.It is believed that Jett was autistic.Seizure disorders are common in autistic boys.Why the Travoltas deny that he was autistic is a mystery,as even John's brother,Joey,says he was autistic,never spoke and rarely made eye contact. But Kawasaki disease did not kill him.
http://www.mayoclinic.com/health/kawasaki-disease/DS00576
http://latimesblogs.latimes.com/thedishrag/2009/01/john-travolta-1.html