What to know about Billy Joel's brain disorder

Billy Joel announced he has been diagnosed with normal pressure hydrocephalus, or NPH. NewsdayTV's Ken Buffa talks to pediatric neurosurgeon Michael Egnor about the disorder. Credit: Newsday
Billy Joel announced he has been diagnosed with normal pressure hydrocephalus, or NPH. NewsdayTV's Ken Buffa talks to pediatric neurosurgeon Michael Egnor about the disorder. Credit: Newsday
The Newsday app makes it easier to access content without having to log in.