Musician Billy Joel says he is having vision, hearing and balance issues.
Today he announced he is canceling upcoming concerts due to a brain disorder.
The 76-year-old Joel was scheduled to play the Superdome in New Orleans in October, with Stevie Nicks.
Joel's social media says this comes "following a recent diagnosis of Normal Pressure Hydrocephalus."
The post says the "condition has been exacerbated by recent concert performances."
Joel's team says ticket purchases will be automatically refunded.
"I'm sincerely sorry to disappoint our audience, and thank you for understanding," Joel said.