Specific clinical phenotypes in relapsing multiple sclerosis: The impact of relapses on long-term outcomes

Objective The impact of relapses on the disease course of relapsing MS remains to be determined. This study aims to identify and characterize clinical phenotypes of relapse onset MS in a longitudinally studied cohort. Methods We recorded the clinical course of MS during the first decade of disease, using five-year epochs. Patients were stratified as: no worsening due to relapse or secondary progression (type A), relapse with worsening seen...