The San Francisco-born star of ‘Grey’s Anatomy’ and ‘Euphoria’ has been on Good Morning America this week to discuss the frightening realities of amyotrophic lateral

Now, however, the actor has shared a few more sobering updates about his health on Good Morning America. “My right side has completely stopped working,” he told the program. Dane said that he expects to lose control of the left side as well.

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.

During a new interview, Eric Dane explained how he's found hope in the physician who has been leading his fight against ALS.

Eric Dane told Good Morning America’s host, Diane Sawyer, about the experience he had before his diagnosis. He said he was experiencing weakness in his right hand, but credited it to being tired. Also,

Two months after Eric Dane shared his ALS diagnosis, the actor told E! News how being on set of Countdown, Euphoria and more has helped his spirit.

The 'Grey's Anatomy' and 'Euphoria' actor spoke to Diane Sawyer alongside his doctor to explain how he plans to fight against the incurable disease.

"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.

I will never forget those three letters. It’s on me the second I wake up. It’s not a dream,” he told Diane Sawyer.

I will fly to Germany and eat the head off a rattlesnake if [doctors] told me that would help,” Dane said. Dane’s Doctor Is Excited About Advances in ALS Research. Dr. Cudk

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

Eric Dane opened up about reconciling with wife, "Beverly Hills, 90210" star Rebecca Gayheart, after their divorce was dismissed earlier this year.