Cassidy announced on February 20, 2017, that he was suffering from dementia.[2]
Death
On November 18, 2017, it was announced that Cassidy has been hospitalized in Fort Lauderdale, Florida with multiple organ failure. He was in critical condition and was placed in a medically induced coma.[3] Two days later, Cassidy was out of the coma and was waiting for a liver transplant.[4] Cassidy died on November 21, 2017, aged 67.[5]