Justin Bieber announced that he had full paralysis on one side of his face

Justin Bieber was diagnosed with Ramsay Hunt syndrome

Ramsay Hunt Syndrome is also known as Herpes Zoster Oticus

Ramsay Hunt syndrome can cause facial paralysis and hearing loss in the affected ear

The virus that causes chickenpox is the same that causes Ramsay Hunt Syndrome

If not treated on time, it may result in permanent facial muscle weakness and deafness