Celine Dion made a surprise Grammys appearance despite her Stiff Person Syndrome. Here's a timeline of her health updates.

Celine Dion onstage at the 66th Grammy Awards.Kevin Mazur/Getty Images for The Recording Academy

• Celine Dion was onstage at the 2024 Grammys to give out the album of the year award.
• She has not been seen much in public since she was diagnosed with Stiff Person Syndrome in 2022.

Celine Dion received a standing ovation at Sunday's Grammy Awards after making a surprise appearance onstage.

It was a rare moment for Dion since she was diagnosed with a rare neurological condition.

Stiff Person Syndrome is a disease that affects the brain and causes muscles to stiffen uncontrollably.

In December 2022, Dion announced her diagnosis in an Instagram video.

The pop superstar canceled concerts after the diagnosis, and has not been seen much in public.

But Dion did attend the Grammys this year, where she presented the most prestigious award, album of the year, to Taylor Swift.

Here's what Dion and her family have said about her health in recent years.