Now, however, the actor has shared a few more sobering updates about his health on Good Morning America. “My right side has ...

Dane -- who shot to fame amid six seasons on the hit ABC drama "Grey's Anatomy," where he played Dr. Mark Sloan, ...

ALS, short for amyotrophic lateral sclerosis, is a degenerative neurological disorder that eventually leads to paralysis, taking away a person's ability to move, speak, swallow or even breathe, ...

Dane revealed that his battle with ALS has left him with only one functioning arm. Photo: XThe man once known to millions as ...

The 'Grey's Anatomy' and 'Euphoria' star says he only has one functioning arm: "My right side has completely stopped working" ...