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.

Ozzy Osbourne died at 76, following a battle with Parkinson’s disease. Here's what to know about the disease and his diagnosis.

According to the Parkinson’s Foundation, Parkinson’s disease is a progressive neurodegenerative disorder that affects dopamine-producing neurons in the brain, resulting in both motor and non-motor symptoms including tremors, limb rigidity, cognitive impairment, depression, and balance issues.