Video
During this discussion about the characterization of multiple sclerosis (MS), Fred Lublin, MD, defines the 4 subtypes of MS: relapsing-remitting MS, secondary-progressive MS, primary-progressive MS, and progressive-relapsing MS.
Patricia K. Coyle, MD, joins the discussion and describes the relationship between clinically isolated syndrome (CIS) and radiologically isolated syndrome (RIS) to MS. Dr Coyle explains the importance of these more recent clinical courses when studying the diagnosis or development of MS.