Rocker Ozzy Osbourne has been diagnosed with Parkin Syndrome and will have to take daily medication for the rest of his life to combat the involuntary shudders associated with the condition.

The former BLACK SABBATH star was given the all-clear for Parkison's disease in 2003, after he complained his tremors were "practically destroying (his) life".

And the 56-year-old singer presumed his body shakes were a result of a lifetime of drug abuse, until doctors recently told him he has inherited the condition from his relatives.

He says, "I'd always assumed it was the booze and stuff. Now I've found it all stems from the family. It's called Parkin but it's not Parkinson's. Anything to do with the central nervous system has the word Parkin in it.

"A doctor in Los Angeles tried to tell me I had multiple sclerosis. And I believed him until I had a second opinion.

"When I told my sisters she said, 'Not you as well? Mum had that and Auntie Elsie and your grandma.'

"I'm like, 'Thanks for f**king telling me'. Me walking around thinking I've got some drug paralysis."