What you should know about Parkinson's disease

Brett Favre revealed he has been diagnosed with Parkinson's disease during his testimony before the House Budget Committee. The Pro Football Hall of Fame quarterback appeared before the committee as part of an investigation into a major welfare case in Mississippi involving his connection to Prevacus, a company that makes a concussion drug.

“Unfortunately, I also lost an investment in a company that I thought was developing a breakthrough concussion drug that I thought would help others,” Favre said. “I'm sure you'll understand that while it's too late for me because I was recently diagnosed with Parkinson's, this is also a cause that is close to my heart.”

“A cause that is close to my heart”:Brett Favre announces Parkinson's diagnosis during congressional hearing