The pathophysiology, signs, and symptoms of multiple sclerosis (MS) and other demyelinating disorders are distinct. However, there is no "diagnostic" test (neuropsychological or otherwise) for MS or other demyelinating conditions. Rather, neuropsychologists are typically asked to conduct neuropsychological evaluations of people with MS (PwMS) and other demyelinating disorders to determine whether cognitive deficits exist and then to evaluate the extent to which such deficits might be related to functional disabilities. Additionally, baseline neuropsychological evaluations are often conducted, making it possible with repeat evaluation to assess for cognitive change related to disease progression, treatment, whether a secondary factor (e.g., depression, anxiety, fatigue) is associated with cognitive and behavioral change, or if an individual is likely to require assistance with activities of daily living.