Billy Joel, the legendary singer, was diagnosed with normal pressure hydrocephalus, affecting his hearing, vision, and balance, leading him to pause performances for targeted physical therapy and recovery.

Dr. Dan Daneshvar, a neurologist who is chief of brain injury rehabilitation at Spaulding Rehabilitation Hospital in Charlestown, to learn more about the singer's diagnosis.

A statement issued on his behalf said Joel's condition "has been exacerbated by recent concert performances, leading to problems with hearing, vision and balance".