Ozzy Osbourne lived with Parkinson's disease for years before his death. Here's what you need to know about the neurodegenerative disease.

The Black Sabbath rocker’s family members revealed the 76-year-old’s passing, writing that they felt “more sadness than mere words convey.”

Ozzy Osbourne, lead singer of Black Sabbath, has died at age 76. He said he had been previously diagnosed with a form of Parkinson’s disease linked to the gene PRKN