Justin Bieber says he has Ramsay Hunt syndrome. Here’s what you need to know.

Justin Bieber has revealed that he is suffering from a rare condition that has paralyzed one side of his face.

Earlier this week, the Canadian singer canceled a number of upcoming shows because of illness, and on Friday he told fans he has been diagnosed with Ramsay Hunt syndrome.

“It is from this virus that attacks the nerve in my ear and my facial nerves, and has caused my face to have paralysis,” the 28-year-old singer said in an Instagram video.