Former NFL player Brett Favre announced this week that he's been recently diagnosed with the condition. Here's what you should know, according to experts.

More than a decade after retiring from football, Brett Favre says he has Parkinson’s disease. Favre told a congressional hearing Tuesday that he had been recently diagnosed. There are nearly 90,000 new Parkinson’s cases each year in the U.S., according to the Parkinson’s Foundation.

The legendary NFL quarterback, 54, told a congressional committee he has been diagnosed with the neurodegenerative condition while testifying about his alleged misuse of public funds.