Actor and musician David Cassidy has revealed he's battling dementia. Cassidy told People magazine that dementia runs in his family and that both his mother and his grandfather suffered from the disease. What's the difference between Alzheimer's disease and dementia? Find out here. The 66-year-old, most famous for his role as Keith Partridge in the 1970s TV show The Partridge Family, has made the decision to stop touring to concentrate on his health. He has been suffering from memory loss and at a recent show forgot the lyrics to some of the songs he's been performing for the past five decades. The star admits that he was in denial for a long time, but has now come to terms with the disease and is focusing on his health and happiness moving forward. You can read the full story over on people.com. Find out how virtual reality is being used to help brighten up the lives of dementia patients. Alzheimer's News Today is strictly a news and information website about the disease. It does not provide medical advice, diagnosis or treatment. This content is not intended to be a substitute for professional medical advice, diagnosis, or treatment. Always seek the advice of your physician or another qualified health provider with any questions you may have regarding a medical condition. Never disregard professional medical advice or delay in seeking it because of something you have read on this website.