Billy Joel Announces Return to Stage After Brain Disorder Diagnosis

• Billy Joel made a surprise cameo in January during a cover band's show.
• Joel is returning to the stage for a one-night event at Florida Atlantic University in December.
• This marks his first show since revealing his brain disorder diagnosis.
• Doctors previously advised Joel not to drive or perform due to his condition.
• Joel's return to the stage comes nearly two years after his last full concert.