Ozzy Osbourne is a rock icon in his own right, but it seems the star has been secretly battling with his health.

Following his emotional Good Morning America interview earlier this month,  in which he finally revealed what's been going on, the star has come out and said something even more devasting.

Keep scrolling for the full story.

Many recognize Ozzy from The Osbournes...

The hilarious reality show followed Ozzy, whose real name is John, and his wife, Sharon, with their 2 kids, Jack and Kelly.

This British family living in LA were completely chaotic and out of control...

But that's what made the world love them.

But it wasn't The Osbournes that made Ozzy famous...

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It's a sad reality that many Ozzy fans don't even realize that he is in one of the most famous and influential metal bands of all time.

Black Sabbath is one of the greatest metal bands to ever exist.

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Hailing from Birmingham in the U.K. Black Sabbath were the first of their kind all the way back in 1968. Ozzy teamed up with bandmates, Geezer Butler, Tony Iommi, and Bill Ward, and, together, they started the era of heavy rock and metal music.

Sabbath wasn't only famous for Paranoid...

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They were, and still are, renowned for their wild lifestyles back in their touring days. The band, and Ozzy, in particular, were well known for their alcoholism and heavy drug use.

He's called The Prince of Darkness for a reason...

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Ozzy has fallen under fire for numerous things, such as biting the head off a live bat on stage in 1982, snorting a line of live ants when on tour with Motley Crue, and taking every illegal drug that has ever existed. But one of the worst things that he has ever done was attempting to strangle his wife, Sharon, to death in 1984 when heavily under the influence of drugs and alcohol.

Ozzy has now been sober for nearly 7 years.

And his sobriety has allowed him to focus on his music and family life. Speaking to Rolling Stone back in 2017, he said: "Now I’m coming on 5 years clean and sober, and I’ve realized what a f****** idiot I was. I mean, I’m still nuts, but in control of it a bit more."

But it seems he's been secretly battling with his health.

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And having "ran out of excuses," finally revealed what he has been diagnosed with.

The star recently appeared on Good Morning America.

via: Twitter / GMA

In the emotional interview, Ozzy along with his wife, Sharon, opened up about the health struggles that have been heavily impacting his life.

His declining health all began last year.

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Things went downhill after the star went under the knife and began experiencing nerve pain.

While performing his last show on New Year's Eve 2018... the singer had a bad fall.

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Causing him to require surgery on his neck.

But this would be the start of a more serious diagnosis for the star...

via: Twitter / GMA

"Well, it has been terribly challenging for us all," he said.

Ozzy explained that he could no longer hide his health battle.

via: Twitter / GMA

"I'm no good with secrets, I cannot walk around with it anymore. Because it's like I'm running out of excuses."

It was then revealed that the star had been diagnosed with Parkinson's.

via: Twitter / GMA

Sharon interjected by revealing her husband's illness. "Parkin 2 which is a form of Parkinson's and it is - there's so many different types of Parkinson's - it's not a death sentence by any stretch of the imagination but it does affect certain nerves in your body."

What exactly is Parkinson's 2 and what will this mean for Ozzy?

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Parkinson's is a brain disorder categorized as a presence of "certain recognizable symptoms" which most commonly include uncontrollable shaking or tremor, lack of coordination, and speaking difficulties. Stage 2 is considered a moderate form of the illness.

However, symptoms vary from person to person...

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And can worsen over time as the illness progresses.

Ozzy is already experiencing an array of unpleasant symptoms...

via: Twitter / GMA

"A year ago next month, I was in a shocking state." "I'm on a host of medication, mainly for this surgery. I've got numbness down this arm from the surgery, my legs are going cold. I don't know if it's the Parkinson's or what. That's the problem." But that's not all...

Sharon then revealed that they are having to travel to Switzerland to seek some more answers.

via: Twitter / GMA

"We've kind of reached a point here, in this country, where we can't go any further because we've got all the answers we can get here," she said. "So in April we're going to a professor in Switzerland and he deals with getting your immune system at its peak. We're going to go where ever we can go to seek answers."

Sharon got visibly emotional...

via: Twitter / GMA

"It's like you have a good day, a good day and then a really bad day."

Just days after the emotional interview, Ozzy has revealed something even more devastating.

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In an interview with Kerrang!,  the star said: "Do I ever think about when my time's gonna come? I think about it; I don't worry about it.

He went on to say that he doesn't think he'll be here in fifteen years' time.

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"I won't be here in another fifteen years or whatever, not that much longer, but I don't dwell on it. It's gonna happen to us all." Sadly, that wasn't all... Now Ozzy has said that he's in "unbelievable pain 24/7" and claimed that even prescribed painkillers aren't offering any relief.

He went on to say that is no longer happy.

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"Am I happy now? No. I haven't got my health. That thing knocked the s*** out of me, man, but I'm still here." "In fact, I worried about [death] more when I was younger than I do now. I just try to enjoy things as much as possible, even though that's so f****** hard sometimes." This is so sad. Ozzy isn't the only celeb to reveal a secret health battle. Keep scrolling to find out more about Justin Bieber's "incurable" illness...