Celine Dion has lost control of her muscles as she battles Stiff-Person Syndrome, a neurological disease that affects the nervous system and creates spasms.

Her sister Claudette Dion told French news site 7 Jours that the Grammy winner, 55, could no longer regulate somebody's movements.

PHOTO | COURTESY Celine Dion

"She doesn't have control over her muscles. What breaks my heart is that she's always been disciplined. She's always worked hard. Our mother always told her, 'you’re going to do it well, you're going to do it properly,’” she told the news outlet.

Claudette also mentioned that it is Celine's ambition to return to the stage, but whether she will be able to do so is unknown.

"It's true that in both our dreams and hers, the goal is to return to the stage. In what capacity? I don't know,” she added.

PHOTO | COURTESY Celine Dion 

It is not the first time the singer's health has made headlines, as she announced earlier in May 2023 that she had a terrible disease that prevented her from performing.

Dion penned a message to her fans on her website: “With a sense of tremendous disappointment, Celine Dion’s Courage World Tour today announced the cancellation of all remaining dates currently on sale for 2023 and 2024. As the world has emerged from the pandemic, Celine has continued to be treated for a diagnosed medical condition that prevents her from performing. Celine is working hard on her recovery, but at this time is unable to successfully prepare for and perform the remainder of the tour."

Dion had previously announced in a December 2022 Instagram video that she had been diagnosed with stiff person syndrome and was being treated for the disease.

PHOTO | COURTESY Celine Dion

"I’ve been dealing with problems with my health for a long time, and it’s been really difficult for me to face these challenges and to talk about everything that I’ve been going through…It hurts me to tell you that I won’t be ready to restart my tour in Europe in February,” she said.

Stiff Person Syndrome is a disorder that involves muscle rigidity and enhanced sensitivity to sound, touch, and emotional stimuli, all of which can produce muscle spasms.