Paddy McGuinness is suffering from arthritis.
The 44-year-old star opened up about his "poorly shoulder" after needing an injection, and explained it was down to dealing with the issue, which generally causes joint pain and stiffness.
Paddy shared a selfie on Instagram in which he is seen pointing at a plaster, and opened up about his doctors visit earlier in the week.
He wrote: "Morning! Nursing a poorly shoulder today. I had an ultra sound steroid injection in it yesterday. The reason, arthritis? I'm 44! #knackered #shoulderfrigged (sic)"
After sharing his diagnosis, the "Take Me Out" presenter was comforted by fans - and friend Jamie Redknapp also offered some kind words.
He said: "@mcguinness.paddy still looking good though pal . See you Friday big man . (sic)"
Meanwhile, "Kiss Me" singer Olly Mus was a bit less sympathetic, and couldn't resist making a very cheeky dig as he commented on the social media post.
He teased: "Wow it's your right arm aswell! stop using that arm so much (sic)"
However, Paddy didn't take the joke too seriously, as he fired back: "Never!!!!(sic)"
Last month, the comedian revealed he is "excited" about the future with his wife Christine.
Paddy has heaped praise on the way his spouse brings up their three children, Leo and Penelope, four, and 18-month-old Felicity.
He said: "She's beautiful on the outside but she's even more beautiful on the inside, trust me. What she does for our kids is amazing.
"The first time I met Christine I thought, my God, she's absolutely stunning! But we got on straight away and it was more than looks.
"Every day we are learning how to cope better. We're excited for the future. There are days when it's horrendous and there are other days when it's mega fantastic."