Kyle Sandilands was mysteriously absent from his KIIS FM breakfast show on Thursday after saying he’d had a ‘stroke’ earlier this week.

The 54-year-old, who is currently battling a brain aneurysm, surprised listeners with a self-diagnosis for why he was fumbling his words during the first hour of the Kyle & Jackie O show on Tuesday.

The shock jock abruptly declared, ‘I think I’ve had a stroke’ after completing the regular ‘Tradie V Lady’ quiz segment during Tuesday’s episode of the radio program.

‘I feel that I’ve said the wrong words multiple times this morning, and I’m not super tired,’ he continued.

Jackie, unsure whether Kyle was joking, defended her on-air partner.

‘No, you haven’t,’ she assured her co-host.

Kylie Sandilands was mysteriously absent from his KIIS FM breakfast show on Thursday after announcing on-air that he’d had a ‘stroke’ earlier this week. (Pictured)

Kyle then explained he had messed up reading an announcement about a prize for the quiz.

A producer on the show agreed, noting that earlier that morning, Kyle had confused the word ‘mattock’ with ‘matlock’.

Kyle completed Tuesday’s episode and was on air again alongside regular co-host Jackie ‘O’ Henderson on Wednesday, but absent on Thursday.

Daily Mail has contacted the show for comment.

It comes after Kyle revealed a major milestone in his health journey.

The radio king, who is on a health kick after his shock brain aneurysm announcement in February, addressed his progress on KIIS FM’s The Kyle & Jackie O Show after a week of exercise and dieting.

The 54-year-old, who is currently battling a brain aneurysm, surprised listeners on Tuesday when he said he felt like he had been fumbling his words during the first hour of The Kyle and Jackie O Show. Pictured: Kyle with his wife Tegan and their three-year-old son Otto

Kyle completed the episode and was on air again alongside regular co-host Jackie ‘O’ Henderson on Wednesday. (Pictured)

In the radio segment, Jackie, 50, reminded listeners of Kyle’s goal to take ‘baby steps’ to inspire others who are struggling with their weight, a program the hosts have cheekily dubbed ‘Kyle’s Big Fatso Club’.

‘Fatso Club started a week ago. Your whole initiative with this was to give people baby steps and make it doable for the big fatsos,’ she began.

‘Your original weigh-in weight last week was 139.7 kilos,’ she said, before revealing Kyle’s updated weight after a week of lifestyle changes

‘Even if I’ve not lost anything, I’m still going to continue,’ he confessed, as he hopped onto the scale.

The result prompted an audible gasp from Jackie, who revealed Kyle’s shock new weight: 137.3 kilograms.

‘You’ve lost over two kilos in one week!’ she added, which was met with applause from the studio.

‘I’m actually quite impressed with myself,’ Kyle replied, clearly chuffed with his progress.

Jackie added: ‘Be impressed because it’s impressive.’

In February, the media personality revealed to listeners he had been diagnosed with a brain aneurysm, prompting an outpouring of support from fans.

‘On Friday, I was told by my medical team, which sounds like I’m already very sick, that I have a brain aneurysm. It requires immediate attention, brain surgery,’ he said at the time.

‘My doctor said if I didn’t get it checked, I would have died. A life of cocaine abuse and partying are not the way to go!’

He revealed his doctor had banned him from cocaine, masturbation, heavy lifting and stress.