After Celine Dion canceled all her tour dates earlier this year because of a diagnosis of a rare neurological disease, Dion's family shared that the singer "has no control of her muscles."
Diagnosed with Moersch-Woltman syndrome more commonly known as stiff-person syndrome in May this year, the 55-year-old singer stepped away from her performance career. Her sister Claudette Dion said that the disorder has affected Dion's ability to walk and sing, and now she has no control of her muscles.
