Celine Dion's Health Decline: Sister Confirms Loss of Muscle Control

Celine Dion's sister has provided an update on the singer's battle with stiff person syndrome, a rare neurological disorder that affects muscle control. Dion, who has been off the stage for over a year, is working hard but lacks control over her muscles. The condition is progressive and incurable, causing difficulties in mobility, vision, and speech. Dion hopes to return to performing one day, but the prognosis is not looking good as there is currently no effective treatment for the disorder. Research into the condition has been slow due to its rarity.