Music world mourns!!! Justin Bieber aged 30 Diagnosed with a Rare neurological disorder Ramsay Hunt Syndrome”It’s with a heavy heart that we share the sad news about Justin, who has been confirmed to be…..see more.”

Ramsay Hunt syndrome (RHS), which has forced singer Justin Bieber to cancel his world tour, is a rare and painful complication of the virus that causes shingles and chickenpox.

RHS was discovered in 1907 by the neurologist of the same name. It is a rare neurological disorder that can inflame and then paralyse the facial nerve and cause a painful rash around the ear or mouth. Symptoms vary from person to person but can cause severe discomfort or pain.

Most sufferers become paralysed on one side of the face and develop an ear rash, according to the US National Organization for Rare Disorders (NORD).

The affected facial muscles may become weak or feel stiff, preventing the sufferer from smiling, frowning or shutting the eye on their paralysed side.

In certain cases, their speech may become slurred.

In many instances, a reddish, painful blistering rash appears on the outer ear and external ear canal.

“It’s often diagnosed because of this ear rash,” French infectious disease specialist, Benjamin Davido, told AFP.