Eric Dane, a cast member in the HBO drama series "Euphoria," poses at the premiere of the series at the ArcLight Hollywood, Tuesday, June 4, 2019, in Los Angeles. (Photo by Chris Pizzello/Invision/AP) Chris Pizzello/Invision/AP

Euphoria and former Grey’s Anatomy star Eric Dane offered a “sobering” update on his health after being diagnosed with amyotrophic lateral sclerosis, or ALS. The actor opened up on Good Morning America about losing mobility in both of his hands,

Dane, who is known for his roles on “Grey’s Anatomy” and “Euphoria,” sat down with ABC News, saying, “I have one functioning arm ... my left side is functioning. My right side has completely stopped working.” He said that his left arm is “going.”