Billy Joel, the arena-filling everyman singer-songwriter, has canceled all of his upcoming concerts, including a large-scale tour scheduled for this year and next, because of a brain disorder known as normal pressure hydrocephalus, or N.P.H., he announced in a statement on Friday.

“This condition has been exacerbated by recent concert performances, leading to problems with hearing, vision, and balance,” said the statement, which was posted to the singer’s social media accounts. “Under his doctor’s instructions, Billy is undergoing specific physical therapy and has been advised to refrain from performing during this recovery period.”

Joel, 76, added, “I’m sincerely sorry to disappoint our audience, and thank you for your understanding.”

A pop music mainstay since the early 1970s, Joel is best known for songs like “Piano Man,” “Scenes From an Italian Restaurant,” “She’s Always a Woman” and “Big Shot” — just a sampling of the crowd-pleasing singalongs in his catalog, which included 43 hits on the Billboard Hot 100 singles chart.