What degenerative disease had Ozzy Osbourne been battling since 2003 before his death in July 2025?

Ozzy Osbourne, the iconic "Prince of Darkness," famously battled Parkinson's disease, a progressive neurodegenerative disorder, for many years. He was first diagnosed with a genetic form of the condition, specifically PRKN 2, in 2003, though he didn't publicly reveal his health struggle until 2020. This particular type of Parkinson's is rare and often manifests earlier in life, progressing at a slower pace compared to other forms.

Parkinson's disease is characterized by the gradual loss of dopamine-producing brain cells, leading to symptoms such as tremors, slowed movement, muscle stiffness, and balance issues. For Osbourne, the disease significantly impacted his mobility and ability to perform, though his voice remained largely unaffected. He experienced various complications, including nerve pain, numbness, and difficulty walking, especially after a fall in 2019 that aggravated a previous spinal injury.

Despite the immense challenges, Osbourne remained remarkably open about his condition, aiming to raise awareness and support for others living with Parkinson's. His candidness provided a valuable glimpse into the realities of living with a chronic illness, and he often credited his family for their unwavering support throughout his health journey. His final performance in July 2025, where he performed seated, served as a poignant testament to his enduring spirit and dedication to his fans.