Eric Dane arrived at Amazon MGM’s premiere of “Countdown” in Los Angeles on Wednesday. The evening marked the actor’s first red carpet appearance since publicly disclosing that he had been diagnosed with ALS.

An emotional Eric Dane, popularly known for starring in the hit American drama series "Grey's Anatomy," opened up about his ALS diagnosis and how it has already left one of his arms

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.