Eric Dane is opening up about his ALS diagnosis, two months after he publicly shared his health news with the world. The “Grey’s Anatomy” star, who is 52, said in a new interview with Diane Sawyer on “Good Morning America” that he originally dismissed his initial symptoms.

“I started experiencing some weakness in my right hand, and I didn’t really think anything of it at the time,” the actor, 52, explained to Diane Sawyer on “Good Morning America” Monday.