"I feel like maybe a couple, few more months, and I won't have my left hand either," the 'Grey's Anatomy' alum said, adding that he worried about losing the use of his legs, in a sobering interview that aired on Monday's 'Good Morning America.

Dane is set to share intimate details about his diagnosis in a new "Good Morning America" interview with Diane Sawyer.

Eric Dane and his doctor discussed his ALS diagnosis, symptoms and the rise in causes during an emotional 'Good Morning America' interview