Billy Joel says he's feeling "good" two months after he was diagnosed with a brain disorder. Joel, 76, gave an update on his condition - a disorder called normal pressure hydrocephalus, in which fluid builds up inside the skull - during the Monday, July 21, episode of Bill Maher's "Club Random" podcast. "It's not fixed," he said. "It's still being worked on. My balance sucks, it's like being on a boat." Joel revealed that although it's not clear what caused his illness, he suspected that it had to do with alcohol consumption. "I thought it must be from drinking.