Céline Dion says that almost anything — even happiness — can trigger the symptoms of her stiff-person syndrome

• Céline Dion says that the symptoms of her stiff-person syndrome can be easily triggered.
• The "My Heart Will Go On" singer opened up about her condition during an interview with Today's Hoda Kotb.
• Dion also shared that she had been experiencing symptoms even as far back as 2008.

Céline Dion says the symptoms of her stiff-person syndrome can be easily triggered by almost anything, including laughter.