Gilbert Gottfried had myotonic dystrophy before his death. What is the rare disease?

Comedian Gilbert Gottfried died on Tuesday after a long illness, his family announced. His publicist revealed in a statement to multiple publications, including People, Gottfried had “recurrent ventricular tachycardia caused by myotonic dystrophy type 2.” Here’s what to know about ventricular tachycardia and myotonic dystrophy. What is myotonic dystrophy and what causes it?“Myotonic dystrophy is a form of muscular dystrophy that affects muscles and many other organs in the body,” the Muscular Dystrophy Association said. It comes from the word myotonia, which is “an inability to relax muscles a...