Eric Dane shared his journey with his ALS diagnosis, saying he maintains a positive outlook as he continues acting despite physical challenges.

Grey's Anatomy and Euphoria star Eric Dane revealed he was diagnosed with amyotrophic lateral sclerosis (ALS). And, most recently, he opened up about his battle with the incurable disease in a sit-down with Diane Sawyer for Good Morning America.

Dane -- who shot to fame amid six seasons on the hit ABC drama "Grey's Anatomy," where he played Dr. Mark Sloan, affectionately known as "McSteamy" -- said his symptoms began over one year ago, when he began to experience weakness in his right hand.