The 'Glad You Came' singer revealed he had a "vocal rehab session" and is "steadily" on the way back.
Get the latest news and pictures of The Wanted star Nathan Sykes!
Did you know?
Nathan's full name is Nathan James Sykes. He was born in Abbeymead, Gloucester on the 18th of April, 1993 and his star sign is Aries.
His official Twitter account is https://twitter.com/#!/nathanthewanted and his Facebook page http://www.facebook.com/pages/Nathan-Sykes/
The 'Walks Like Rihanna' group say they are missing their fifth member while out in the US.
The 'Lightning' singer was all smiles after his latest doctor's appointment out in Los Angeles.
The 'As Long As You Love Me' singer sends a message to the UK star to wish him well.
The 'Lightning' singers were performing live in New York this week after news of Nathan's hiatus.
The 'Lightning' singer has also been went wishes of a speedy recovery by his bandmates.
Latest The Wanted
The UK singer also says fans will realise the band's friendship is real from watching their new E! show.
The group can be seen rehearsing for the promo, discussing Jay's beard and playing with tape measures in the footage.
It pays tribute to Backstreet Boys, N*Sync and Take That, but what else do were know about The Wanted's new video for 'Walks Like Rihanna'? Check out our guide for the song, which is released in June.
Watch the video for the band's brand new song from their forthcoming album.