The musician posted a video to social media, explaining that his health has forced him to cancel all of his upcoming shows.

When a shingles epidemic affects the facial nerve around someone's ears, it causes paralysis of parts of the face, which is known as Ramsay Hunt syndrome.

Nicoya Rescorla, who shares Justin's disability, believes it has "taken away her independence."

She tells Radio 1 Newsbeat, "The agony has been horrible - it's been devastating."

Ramsay Hunt Syndrome is a complication of shingles, which is a transmissible disease. It cannot be spread from one person to another.

Shingles is related to the chickenpox virus, which many people contract as children.

According to the Facial Palsey UK charity, if the immune system gets depressed and less able to combat infection, it might lead to facial palsy.

A recurrence of the chickenpox virus can make the body vulnerable.