Ozzy Osbourne, lead singer of the legendary heavy metal rock band Black Sabbath, died this week at age 76 . Although Osbourne's cause of death hasn't yet been publicly released, he revealed in an exclusive interview with " Good Morning America " in 2020 that he had been diagnosed with Parkinson's disease in February of the previous year. "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," Osbourne's wife, Sharon, said during the interview. "And it's like you have a good day, a good day, and then a really bad day." Here's what you need to know about Parkinson's, including what are the symptoms, how it's diagnosed and what treatments are available. Parkinson's is a neurodegenerative diso

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