Eric Dane, appearing on today’s Good Morning America, said in a taped interview with Diane Sawyer that due to ALS he no longer has use of his right arm and that he expects to lose use of his left hand.

Eric Dane opened up about his recent ALS diagnosis on "Good Morning America," telling Diane Sawyer that he now only has "one functioning arm."

Eric Dane reveals why his ALS diagnosis makes him "angry" as a dad of two teenage girls in his first sit-down interview after publicly revealing his ALS diagnosis. The 'Grey's Anatomy' alum shares his daughters,