Eric Dane, the actor best known for his role as Dr. Mark Sloan on “Grey’s Anatomy,” died on February 19, 2026, at the age of 53 after a battle with amyotrophic lateral sclerosis (ALS). His passing has brought renewed attention to this devastating neurodegenerative disease, prompting many to request: what is ALS?
ALS, often called Lou Gehrig’s disease, is a progressive disease that affects nerve cells in the brain and spinal cord. These nerve cells, called motor neurons, control voluntary muscle movement. As these cells degenerate and die, individuals gradually lose their ability to move, speak, swallow and even breathe. The disease progresses at varying rates, and no two people experience it exactly the same way. Eric Dane publicly revealed his diagnosis in April 2025, and continued to work even as the disease progressed, appearing in roles on “Brilliant Minds” and preparing for a return to “Euphoria.”
Understanding the Progression of ALS
The symptoms of ALS typically begin with muscle weakness, twitching, or cramping. These symptoms often start in the limbs, but can also affect speech or swallowing. As the disease advances, muscle weakness spreads, leading to difficulty with walking, gripping objects, and performing everyday tasks. Speech becomes slurred, and swallowing becomes challenging, increasing the risk of choking. Eventually, ALS affects the muscles responsible for breathing, requiring the use of a ventilator to sustain life.
According to the National Institutes of Health, ALS is considered a rare disease. While the exact incidence is tough to determine, it’s estimated that approximately 5,000 Americans are diagnosed with ALS each year. Most cases are sporadic, meaning they occur without a clear family history. However, about 5-10% of cases are familial, meaning they are inherited. The cause of sporadic ALS remains largely unknown, though research suggests a combination of genetic and environmental factors may play a role.
Eric Dane’s Advocacy and Fight
Even as he faced his own health challenges, Eric Dane became a vocal advocate for ALS awareness. In September 2025, he met with Representative Eric Swalwell of California to discuss the condition and the require for increased research funding. Footage shared on TikTok showed Dane expressing his determination to fight the disease for as long as possible, stating, “I’m going to ring every bell.” He spoke of his desire to witness important milestones in his daughters’ lives, including their college graduations and future families.
Dane continued to emphasize his commitment to working despite the physical limitations imposed by ALS. Speaking at an I Am ALS-hosted panel in December 2025, he said, “I’m fairly limited in what I can do physically as an actor, but I still have my brain, and I still have my speech, so I’m willing to just do about anything. I’ll seize on any role.” He expressed gratitude for the opportunity to continue working in any capacity.
Diagnosis and Current Treatment Options
Diagnosing ALS can be challenging, as there is no single test to confirm the disease. Doctors typically rely on a combination of neurological examinations, electromyography (EMG) to assess muscle activity, nerve conduction studies, and imaging scans to rule out other conditions.
Currently, there is no cure for ALS. Treatment focuses on managing symptoms and improving quality of life. Riluzole and edaravone are two FDA-approved medications that can modestly slow the progression of the disease in some individuals. Other treatments include physical therapy, occupational therapy, speech therapy, and nutritional support. Assistive devices, such as wheelchairs, communication devices, and ventilators, can help individuals maintain independence and manage their symptoms. Research into novel treatments, including gene therapies and stem cell therapies, is ongoing.
Looking Ahead: Research and Support
The death of Eric Dane underscores the urgent need for continued research into the causes, prevention, and treatment of ALS. Organizations like The ALS Association and I Am ALS are dedicated to funding research, providing support to individuals and families affected by the disease, and advocating for public policies that improve access to care.
For those seeking more information about ALS, resources are available from the National Institute of Neurological Disorders and Stroke (https://www.ninds.nih.gov/health-information/disorders/amyotrophic-lateral-sclerosis-als) and The ALS Association (https://www.als.org/).
The coming months will likely notice continued discussion about ALS, spurred by the loss of a well-known actor. The next major event on the horizon is the annual ALS Association Advocacy Day in Washington, D.C., scheduled for May 2026, where advocates will meet with lawmakers to push for increased research funding and improved access to care.
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