- Billy Joel Announces Brain Disorder and Cancels All Concerts The New York Times
- Billy Joel Announces Decision on Ticket Refunds After Abruptly Cancelling Tour Yahoo
- Billy Joel Cancels All Tour Dates and Reveals Health Diagnosis After Recent Stage Fall People.com
- Billy Joel has normal pressure hydrocephalus. What is that, and what are symptoms? USA Today
- What is normal pressure hydrocephalus, the brain disorder affecting Billy Joel CBC
