Billie Eilish has spoken openly about living with Tourette syndrome, describing the condition as something that can be physically and emotionally exhausting. She first noticed symptoms as a child and was officially diagnosed at the age of eleven. Tourette syndrome is a neurological condition that causes sudden, repetitive movements or sounds known as tics. These tics can include blinking, muscle movements, or vocal sounds that a person cannot fully control. During an interview on the My Next Guest Needs No Introduction with David Letterman, the Grammy-winning singer explained that people sometimes misunderstand her tics, often assuming she is joking or making a deliberate movement. According to her, this reaction can be frustrating because the condition is frequently invisible to others unless they know what to look for.

Eilish also shared that many of her tics are subtle physical movements that happen throughout the day, such as moving her ear muscles, raising her eyebrow, or flexing her arms and jaw. While they may not be obvious to people around her, she explained that constantly managing these movements can feel tiring. Tourette syndrome varies widely from person to person, and symptoms may become stronger during moments of stress, excitement, or fatigue. Another well-known musician who has discussed the condition publicly is Lewis Capaldi, who has also raised awareness about living with Tourette syndrome while continuing his music career. By speaking honestly about her experiences, Billie Eilish has helped increase understanding of the condition and encouraged conversations about neurological health. Her openness reminds fans that even globally successful performers face personal challenges, and sharing those stories can help others feel less alone.