Renowned Canadian singer Céline Dion continues to battle stiff person syndrome, a rare neurological disorder affecting her muscles. Her older sister, Claudette, expressed concern over Céline’s condition, revealing that she “doesn’t have control over her muscles.” Despite her unwavering work ethic and desire to return to the stage, the progressive and incurable nature of the syndrome poses significant challenges. Claudette emphasized the limited research into this rare condition due to its rarity, affecting only one in a million cases.