Westlife singer Mark Feehily has confirmed that he has been struck down with pneumonia after cancelling shows.
The 42-year-old singer took to Instagram on Monday to share the update on his health.
Mark posted a lengthy explanation as to why he was forced to pull out of their recent shows, as he apologised to fans but said he hoped to be back on the road as soon as possible.
"Firstly, I'd like to say a huge sincere thank you to everybody for sending their and get well soon messages - it means so much," the Irish singer penned.
"I was really gutted to miss the weekend shows in Newcastle but I started to feel quite unwell on Friday and that doctors have confirmed that it is a bout of pneumonia.
"I know it's scary when you first hear the word 'Pneumonia', but thankfully, I got to the doctor and the 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 the 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.
"This does however mean missing more gigs which is horrible but I'll be back on stage as soon as I can get the all clear."
Mark went on to confirm that his bandmates will be doing the shows without him as they set to carry on on their tour of the UK and Ireland.
"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 to you all, I hope to see you back on the road very, very, soon. Mark."
Mark's fans were quick to rush him their well wishes following his worrying diagnosis.
"No rush you’re health is the most important thing. We will still be here when you feel better. Sending you the biggest hug and lots of love," one fan commented.
"Bless you hope you are feeling better soon we have tickets for Sheffield tonight so will certainly cheer on the boys," another echoed.
Someone else penned: "Oh my god get well soon mark plenty of rest."
"Will scream for you that but louder tonight in Sheffield Mark," a fourth promised.