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Award winning actor Alan Alda announced on "CBS This Morning":

(Alda) "I haven't said in public in pubic until now that I've been diagnosed with Parkinson's Disease."

Alda revealing he was diagnosed three and a half years ago, but decided to go public because he's noticed his finger twitching and thought:

(Alda) "It's probably only a matter of time before somebody does a story about this from a sad point of view, not where I am."

Alda rose to fame as Captain "Hawkeye" Pierce on the hit series 'M*A*S*H'  from 1972-1983. He's won six Emmy awards and the same number Golden Globes.

Jacquelyn Karl, FOX News.

Follow Jacquelyn Karl on Twitter: @Jacquelyn_Karl