MS is often described as an invisible disability. But as the disease progresses, the focus - of patients as well as medical professionals - can shift to more visible, physical symptoms, like mobility issues.However, because the majority of people with MS are diagnosed in their 20s and 30s, the psychological and cognitive effects can all too often go untreated. And these symptoms are just as common as the outward ones. In fact, as you'll hear, these may be even more common, with 50% of all peo...