Grey's Anatomy fans have tuned in year after year to watch the cast deal with some of the most intense medical emergencies - and, in the process, have seen the show's stars deal with their own health scares in real life. In January 2026, fans were reeling from the news that Steven W. Bailey had been diagnosed with Congenital Myasthenia Syndrome (CMS). "Say, speaking of troubles, it's the darndest thing, but it turns out I have a rather rare genetic neuromuscular disorder.