WESTLIFE star Mark Feehily has revealed his "scary" diagnosis.
Last weekend, the singer had to pull out of two major gigs at the last minute due to a mystery illness.
Mark took to Instagram today to tell fans he has pneumonia.
He said: "Hey to all the fans, Mark here! Firstly, I'd like to say a sincere thank you to everybody for sending their love and get well soon messages - it means so much.
"I really was gutted to miss the weekend shows in Newcastle but I started to feel quite unwell on Friday and the doctors have confirmed that it's a bout of pneumonia."
The Sligo native explained how he caught the illness early.
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Mark said: "I know it's scary when you first hear the word 'pneumonia' but thankfully I got tot he doctor and hospital very quickly and got on the antibiotics as soon as possible, so everything is currently under control.
"I have been informed that the quickest way to recovery is to rest and continue antibiotics.
"I'm feeling a bit better everyday. The nurses and doctors are taking amazing care of me so it should all be over in no time."
Mark won't be back on stage just yet but is looking forward to when he can.
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He told his fans: "This does however mean missing more gigs which is horrible but I'll be back on stage as soon as I get the all clear.
"Until then, Nicky, Shane and Kian will continue to fly the Westlife flag high for all of us.
"Please scream even louder than usual for those three legends in my absence!
SENDING LOVE
"Sending love to you all, I hope to see you back on the road very, very soon! Mark xx."
Westlife's fans all rushed to the post to send their love to Mark.
Evelyne commented: "Feel so bad for you. Get better soon."
Kerrie wrote: "Oh my god get well soon mark plenty of rest."
Katie said: "He didn't look well on Thursday, get well soon."
Dany commented: "I'm praying for your speedy recover, Mark."
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