The “Piano Man” singer has been diagnosed with normal pressure hydrocephalus, which can cause mobility and cognitive issues.

Piano Man' hitmaker Billy Joel was recently diagnosed with a brain disorder called NPH or Normal Pressure Hydrocephalus, which led him to cancel his upcoming concerts. But what is NPH? Read on and find out.

Singer-songwriter Billy Joel has said he has been diagnosed with a neurological condition that prevents him from performing for some time. He is suffering from normal pressure hydrocephalus (NPH), where the fluids inside your brain cavities are overproduced,