Over the course of his storied music career, rock icon Ozzy Osbourne faced health battles with substance abuse and Parkinson's disease.

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

The three main symptoms are tremor (shaking), slowness of movement and rigidity (muscle stiffness). Subtle changes in a person’s walking pattern could be an early sign of Parkinson’s disease. Some people develop very small handwriting, a loss in their sense of smell, nerve pain or insomnia.

Tributes are pouring in from music legends and celebrities after Ozzy Osbourne, the rock and heavy metal icon turned reality show star, has died at the age of 76, according to his family.

On the afternoon of July 6, some 80 metalheads gathered at The Stables in Andheri East, a day after Back To The Beginning, rock legend Ozzy Osbourne’s farewell concert at Villa Park, Birmingham. They were watching the gig’s video footage on a large screen,