1. Billy Joel cancels tour dates after diagnosis. What to know about the brain condition  NPR
2. Billy Joel’s Daughter Shares Emotional Message After Serious Health Diagnosis  parade.com
3. Billy Joel’s Daughter Alexa Ray Joel Reacts to His Health Diagnosis with Nod to Lyrics from a Song He Wrote for Her  People.com
4. What is Normal Pressure Hydrocephalus, the Disorder Billy Joel Was Diagnosed With?  The New York Times
5. Billy Joel Was Diagnosed With a Reversible Type of Dementia. What Are the Symptoms?  Yahoo

Source: Google Finance – Market News