Billie Eilish has opened up about her diagnosis of Tourette’s Syndrome in a new interview.Eilish spoke to David Letterman as part of his My Next Guest Needs No Introduction series on Netflix. Other guests on the new series, which is streaming now on Netflix, include interviews with Will Smith, Ryan Reynolds, Kevin Durant and Julia Louis-Dreyfus.In the in-depth interview, Eilish opened up about being diagnosed with Tourettes ahed 11, as well as fame and music.Speaking about her Tourette’s Syndrome, Eilish said: “What’s funny is so many people have it that you would never know,” she said, explaining that she knew several artists who also have Tourette’s Syndrome.When Letterman asked if talking about the condition made it worse, Eilish replied: “Not at all.”“I really love answering questions about it, because it’s very very interesting.