Popular Canadian singer, Celine Dion, has opened up about her battle with Stiff Person Syndrome, a neurological disorder that causes uncontrollable muscle spasms.

The “I’m Alive” singer announced the cancellation and postponement of her upcoming shows in a video posted to her Instagram page on Thursday.

The video said:

Hello everyone, im sorry it’s taken me so long to reach out to you. I miss you all so much and can’t wait to be on stage talking to you in person.

As you know I’ve always been an open book and I wasn’t ready to say anything before but im ready now.

I’ve been dealing with problems with my health for a long time and its been really difficult for me to face my challenges and to talk about everything that I’ve been going through.

Recently, I’ve been diagnosed with a very rare neurological disorder called the stiff person syndrome which affects 1 in a million people.

While we’re still learning about this rare condition, we now know this is what’s been causing all the spasms I’ve been having.

Opening up about her medical condition, the singer revealed that the rare disease has been causing her to have muscle spasms.