Celine Dion’s sister revealed the singer’s tragic diagnosis.

Celine Dion recently revealed that she has been dealing with a difficult diagnosis that has kept her from performing.

Prior to the celebrity’s terrible revelation, her sister, Claudette, suspected another reason was contributing to her poor health.

She said in October that she expected Celine to return to the stage soon and advised fans not to be concerned.

“First and foremost, I always say that if Celine wasn’t feeling well, we would hear about it,” Claudette said before Celine was forced to cancel her tour and concerts.