Eric Dane reflects on his ALS diagnosis and the close relationship with Rebecca Gayheart after their reconciliation earlier this year

Actor Eric Dane, who was recently diagnosed with ALS, opened up about his condition in a deeply emotional interview. Devastated fans around the world have expressed their heartbreak in response to the video.

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