David Cassidy is battling with dementia

He said: "I was in denial, but a part of me always knew this was coming."

The '70s heartthrob had to watch his grandfather fight the condition, which is a persistent disorder of the mental processes caused by brain disease and marked by memory disorders and personality changes, and witnessed his own mother Evelyn Ward "disappear" into dementia until she eventually died at the age of 89.

Speaking to People magazine, he recalled: "In the end, the only way I knew she recognised me is with one single tear that would drop from her eye every time I walked into the room. ... I feared I would end up that way."

Although it's taken him a while to come to terms with the disease, David has now decided to stop touring so that he can focus on his health and happiness.

He explained to the publication: "I want to focus on what I am, who I am and how I've been without any distractions," he says. "I want to love. I want to enjoy life."

David hasn't had the easiest of times over the years as he was charged with driving under the influence (DUI) in November 2010 and then dished out the same charge in August 2013 and January 2014 when he committed the same crime.

Around the same time of his second DUI charge, David's wife Sue Shifrin-Cassidy, with whom he has 25-year-old son Beau, ended their marriage.

She filed for divorce later that year and he dec lared himself bankrupt in 2015.

David has also been very open about his battle with substance abuse and even did a stint in rehab in 2014 in a bid to beat his demons once and for all.