What is Celine Dion's stiff person syndrome? 

Due to issues from stiff person syndrome, a rare neurological condition that causes spasms and muscle rigidity, 

singer Celine Dion has postponed her "Courage World Tour" dates through 2024, the famous person revealed on Friday.

On September 18, 2019, Canadian artist Celine Dion takes the stage at the Videotron Center in Quebec City, 

Quebec, to kick off her brand-new global tour, "Courage." (Image courtesy of AFP/Alice Chiche) (Image courtesy of AFP/ALICE CHICHE via Getty Images),

Source: Celine Dion will probably never tour again when she cancels her future performances.

Dion delayed a number of her performances in December after discovering the cause of her musculoskeletal pain and mobility issues. 

At the time, Dion stated, "While we're still studying about this uncommon ailment, 

we now know this is what's been causing all of the spasms that I've been suffering.