Kelly Osbourne posted a sweet video with her son Sidney Wilson and her dad Ozzy Osbourne, just two days before the Black Sabbath frontman died.

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

In Parkinson’s disease nerve cells in the brain slowly break down and die. Many symptoms are caused by a loss of those cells that produce dopamine – a mood regulator – in th