There are fears that Des Cahill may not be able to take part in Dancing with the Stars this Sunday due to illness and injury.

The RTÉ Sport presenter is enduring a miserable week with conjunctivitis, a sinus infection, fluid on the knee and a calf strain.

He has been told to rest by a doctor and has been unable to train this week.

If Cahill is well enough to take to the floor on Sunday night he will be dancing the Samba to Engelbert Humperdinck's Quando, Quando, Quando.

Speaking to RTÉ Entertainment recently, Cahill admitted that combining training with work was "killing him".

Fingers crossed it'll be all smiles this Sunday

"I was home around twenty-past-eleven Monday night," he recounted. "I was in work at half five on Tuesday morning, left [for training], got home again at 8pm. Then back in at half five this morning."

There's no chance of a bit of a break on Saturdays, either.

Do not attempt this at home

"Saturday we're all there in Ardmore for the rehearsals but I've to come in and do a four-hour Saturday Sport programme," he explained. 

"My age and lack of fitness is [sic] a disadvantage but the biggest one, I find, is trying to combine it. I didn't realise there'd be so much involved."

The broadcasting veteran also revealed to RTÉ Entertainment that it's "unbelievable" how women are reacting to him since he took to the floor for Dancing with the Stars.

"They shout out windows of cars at me - in a fun way. They're reacting to 'Dancing Dessie' rather than Des Cahill, the sports presenter."

Dancing with the Stars, Sunday, RTÉ One, 6.30pm