Justin Bieber has opened up about his health after cancelling two concerts in Toronto earlier this week saying he's been diagnosed with Ramsay Hunt syndrome, a virus that has left him with a form of facial paralysis.

The pop superstar was scheduled to perform at the Scotiabank Arena in downtown Toronto on Tuesday and Wednesday but made the last-minute decision to postpone the shows due to what he described as a “sickness.”

On Friday, Bieber posted a video to Instagram detailing the extent of his symptoms, in which the right side of his face is visibly paralyzed.

“As you can see, this eye is not blinking,” he said in the video. “I can’t smile on this side of my face…there’s full paralysis in the centre of my face.”

“So for those frustrated by my cancellations of the next shows, I’m just physically, obviously, incapable of doing them.”

MORE: What is Ramsay Hunt syndrome? Bieber's diagnosis explained

He said that his body is telling him to “slow down” and that he hopes fans understand.

“This is pretty serious as you can see. I wish this wasn’t the case,” he said.

“It’s time to just rest and relax and get back to 100 per cent, so that I can do what I was born to do.”

The artist says he is doing facial exercises to help with the paralysis, but he is unsure how long it will take for him to heal.

Bieber’s June 10 concert in Washington has also been cancelled. There are no other Canadian stops scheduled in his 2022 World Tour and it’s unclear if any of his other future performances will be postponed.

Canadian former politician Olivia Chow was diagnosed with the same virus back in 2013, which left her with limited movement on one side of her face.

Scotiabank Arena has previously said that tickets for the cancelled Toronto shows would be honoured when the dates are rescheduled.