It's been eating away at what is an essential part of me. >> Diagnosed early last year with multiple sclerosis, Wisconsin based artist Serena Hosvet says her symptoms are the worst they've ever been. Tremors in her hands, making it hard to work.>> It feels like parts of you are disappearing. MS is a chronic illness in which the body's immune system attacks the protective covering around nerves causing numbness, trouble walking or seeing, and other issues. At times, language eludes Serena.What's it called. W ...