Brian Littrell, member of the Backstreet Boys, was on The Doctors today to discuss his 6-year-old son Baylee's battle with Kawasaki Syndrome. Baylee said it was "the worstest day of my whole entire life."

This, of course, is the same illness that the John Travolta and Kelly Preston say their late son Jett was suffering from. While the symptoms of Kawasaki are terrifying (high fevers, rashes, and impacts on the arteries of a child's heart), it is a very short-lived disease that is, most often, cleared up in under a month. Baylee is out of the woods now with this disease, and the doctors on the show reiterated that seizures are not a part of this disease.