The update comes three months after he collapsed onstage at Mohegan Sun Arena. "I'm sincerely sorry to disappoint our audience," the singer said in a statement to Rolling Stone. "Thank you for understanding.

The US singer has announced he has Normal Pressure Hydrocephalus, which causes a build-up of fluid in the brain and which "has been exacerbated by recent concert performances".

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, he announced on Friday.