Celine Dion makes rare appearance at Grammys after stiff-person syndrome diagnosis, presenting award to Taylor Swift

Celine Dion made a surprise appearance at the Grammys on Sunday night, presenting Taylor Swift with the award for album of the year. Dion has made very few public appearances since revealing she was diagnosed with stiff-person syndrome, a rare neurological disorder, in 2022.

In November, Dion, 55, was seen at an NHL game with her three sons, according to Entertainment Tonight. But in an interview published in December, her sister Claudette Dion opened up about the condition, saying Dion doesn't have control of her muscles.

Stiff-person syndrome, also called Moersch-Woltman syndrome, is a "rare neurological disorder with features of an autoimmune disease that causes the body to become rigid and more sensitive to noise, touch and emotional distress," according to the National Institute of Neurological Disorders and Stroke. It can also leave patients with "hunched over and stiffened" postures.