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.

Grey's Anatomy star Eric Dane first broke the news of his ALS diagnosis back in April, and has detailed how he is coping with the health condition.

The former "Grey's Anatomy" actor shared details of the progression of his symptoms and the emotional toll of living with the neurological disease.