Billy Joel announced Friday that he was diagnosed with normal pressure hydrocephalus after having trouble with his hearing, vision and balance.

Hydrocephalus occurs when cerebrospinal fluid (CSF) builds up in the brain, disrupting cognitive ... and the spinal cord from force. Typically, adults have 5 fluid ounces of CSF, with the body ...

Though it can happen at any age, normal pressure hydrocephalus is most common in older adults. It is most often diagnosed through a combination of neurological testing and brain imaging.

Billy Joel is sharing a message with fans for the first time since revealing he was diagnosed with a rare brain condition.

It is most prevalent in adults over the age ... or surgery on the brain. Computer illustration depicting enlarged lateral ventricles (hydrocephalus, right side, orange) of the human brain, and ...

It’s most commonly diagnosed in older adults, usually showing ... "But what happens in normal pressure hydrocephalus is an abnormal buildup of fluid that causes brain dysfunction because of ...