Howard Stern has sparked concerns for his health after taking his first ever day off from his radio show.

The SiriusXM host sent social media users into a frenzy when it was announced he would be taking a 'personal day' away from his New York based show.

His wife, Beth Stern, has insisted that 'everything is great' with Howard and that he will be back on the show Monday.

Howard Stern (pictured) announced he would be taking a 'personal day' away from his radio show on Wednesday

Howard's wife Beth Stern, pictured, insists Howard is alright. She said: 'Everything is great. He’s coming back on Monday. He had to take a personal day, that’s all'

'Everything is great. He’s coming back on Monday. He had to take a personal day, that’s all,' she told the New York Post.

Concerned fans took to the Twitter to speculate over Howard's unexpected cancellation Wednesday.

Many fans claimed this was the first time Stern, who does three shows a week, had taken a day off 'since the 80s'.

One fan wrote: I have listened to the #HowardStern show since the 80s… NEVER canceled a show before! I am very concerned about the reason.'

He added: 'Very alarming. I wish they'd announce something'

Another confused fan said: 'Praying for #HowardStern that everything is OK.'

One commented, 'Peace and love to my hero @HowardStern, who has missed a live show for the first time ever this morning. I hope everything is OK.'

The absence also sparked Reddit threads and conspiracy theories about what could have caused the shock jock to cancel.

Many fans claimed this was the first time Stern had ever taken a day off 'since the 80s'

Rumors ranged from suspected marital troubles to legal issues with radio station Sirius, which he joined in 2006.

Some speculated whether the departure could be to do with the lawsuit that was filed after he aired a woman's confidential call with the IRS.

Others wondered about the 63-year-old's health.

Fans also discussed Stern's mood on Monday's show, which was described as 'sour'.

'The Howard Stern Show' has yet to make an announcement about the absence.