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

Heavy metal rocker Ozzy Osbourne died this week aged 76, just weeks after his farewell show and about five years after announcing he had Parkinson’s disease. Here’s what to know about the disease.

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.