Canadian pop singer Justin Bieber disclosed on Friday that he was diagnosed with a virus that left half of his face paralyzed and forced him to cancel some upcoming performances to focus on recovery.

In a video that has gone viral on social media, Bieber said he had contracted Ramsay Hunt syndrome, which affected nerves in his ear and face.

Justin Bieber revealed that half of his face is paralyzed after being diagnosed with Ramsay Hunt Syndrome

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He noted that his right eye was not blinking, adding “I can’t smile on this side of my face. This nostril will not move. So, there’s full paralysis on this side of my face.”

Bieber added that he has been doing facial exercises to “get back to normal,” but that he does not know how long it will take to recover.

He had been due to play in Washington DC and Toronto earlier this week, with concerts also planned in New York and Los Angeles in the coming weeks, BBC reported.

The Mayo Clinic, cited by the BBC, said that for most people, the symptoms of Ramsay Hunt syndrome were temporary, but can become permanent.

“The inability for patients to close one eyelid can also cause eye pain and blurred vision,” the organization said according to the BBC report, adding that it is most common in people over 60 years old.