Celine Dion Has Lost Control of Her Muscles, , Her Sister Confirms. Dion was diagnosed with a rare neurological condition known as Stiff-Person Syndrome last year. In a new interview with '7 Jours,' Dion's sister, Claudette, shared an update about the singer's health, according to 'The Hollywood Reporter.'. She said that Dion "is working hard [to battle through her disorder], but she doesn’t have control of her muscles." . What pains me is that she’s always been disciplined. She’s always worked hard. Mom always said to her: ‘You will do well, you will do things as they should be done.’ , Claudette Dion, via '7Jours'. There’s no doubt that in our dreams and in hers, the idea is to come back to the stage. In which state? I don’t know. , Claudette Dion, via '7Jours'. The vocal cords are muscles, and the heart is also a muscle, Claudette Dion, via '7Jours'. Claudette went on to say that science hasn't found a way to treat the condition yet. That’s what is so upsetting to me. Since these cases are one in a million, scientists have not done that much research since it doesn’t affect that many people, Claudette Dion, via '7Jours'. You know how people often jump up in the night because of a cramp in the leg or the calf? It’s a bit like that, but in all muscles. There’s little we can do to support her, to alleviate her pain, Claudette Dion, via '7Jours'
