Explaining on Instagram: "Billie Eilish has been open about living with Tourette’s syndrome, a neurological condition she was diagnosed with at just 11 years old. Her tics are mostly subtle, such as raising an eyebrow, clicking her jaw, or flexing certain muscles, but they are a constant part of her daily life. As she has explained herself, she “never doesn’t tic at all,” even if most people don’t notice right away. While the condition can be physically and mentally exhausting, Billie has notice

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