By Michael Osborn
Entertainment reporter, BBC News
Norton was the host at the Bafta TV Awards on Sunday
TV personality Graham Norton broke two ribs shortly after he finished hosting Sunday's Bafta TV Awards ceremony.
The 46-year-old told the BBC News website: "I got home and fell down my stairs and broke two ribs."
"I've been to the hospital and given horse tranquilizing pain-killing medication. There's nothing they can do about broken ribs."
Norton, who hosted I'd Do Anything on BBC One last year, is due in Moscow for the Eurovision Song Contest on 16 May.
'Sober in Moscow'
He said the event would be a little less raucous following his injury.
"When I opened my pain medication today it said avoid alcoholic beverages for four to six weeks. So I'm going to be sober in Moscow."
The star, who also has his own BBC Two chat show, is stepping into Sir Terry Wogan's shoes as the UK's commentator for the flamboyant song show.
Accepting his new role last year, Norton said: "Sir Terry is nothing less than legend and is an impossible act to follow, but somebody must and I just couldn't say no."
Following his injury, Norton pulled out of Monday night's performance of West End show La Cage Aux Folles, in which he plays drag queen Albin.
But the star is expected to return to the stage on Tuesday.