Multiple Sclerosis Outcome Determination Evaluating Real Differences After TimE

All participants will be invited to attend their local research facility to undergo a physical and questionnaire assessment as well as an MRI. Assessments include: Expanded Disability Status Scale, 9-Hole Peg Test, MRI scan, Patient Reported Outcome Measures (MSIS-29, neuroQOL and PROMIS), Brief International Cognitive Assessment for MS)