SHOWING THE SIGNS TMZSports.com
Brett Favre tells TMZ Sports he was diagnosed with Parkinson's Disease in early January ... after he began experiencing trouble using his right arm and hand.
The Hall of Fame quarterback made the revelations to us in late August while discussing various football topics. At the time, he requested we don't report it, but, after he went public with his diagnosis during a hearing on Capitol Hill on Tuesday -- he gave us permission to run it.

9/25/24
THE RECENT DIAGNOSIS
Favre explained he first had suspicions something was up when his dominant arm -- which he used to throw 508 touchdown passes in his 20-year NFL career -- would get "stuck.