Céline Dion says she experienced stiff-person syndrome symptoms for about 17 years before her 2022 diagnosis, relying on Valium to function.
https://www.foxnews.com/entertainment/celine-dion-reveals-17-year-secret-health-battle-rare-diagnosis
https://www.foxnews.com/entertainment/celine-dion-reveals-17-year-secret-health-battle-rare-diagnosis