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

Eric Dane, appearing on today’s Good Morning America, said in a taped interview with Diane Sawyer that due to ALS he no longer has use of his right arm and that he expects to lose use of his left hand.

Actor Eric Dane is opening up about living with ALS. In his first television interview since revealing he has amyotrophic lateral sclerosis (ALS), also known as Lou Gehrig’s Disease, Dane, 52, recalled the symptoms that led to discovering his diagnosis about a year and a half ago.