VALIDATE: Factor VIII Trending for MS Relapse

Multiple sclerosis (MS) patients hospitalized with an acute motor or visual relapse will be consented. Factor VIII-related labs will be systematically drawn for six months. During this time, patients will be followed with clinical assessments including: Expanded Disability Status Scale (EDSS), Multiple Sclerosis Functional Composite (MSFC), Low Contrast Sloan Letter Chart Testing, Symbol Digital Modality Test (SDMT), and NeuroQol. MRIs of the brain, cervical spine, and thoracic spine with and without contrast will be obtained. All patients will be treated with 1 gram IV solumedrol daily for five days per standard care. Clinical, imaging, and Factor VIII-related lab data individually or in aggregate will be correlated with relapse presence, severity, and extent of recovery following standard intravenous (IV) solumedrol treatment