In relapsing-remitting multiple sclerosis, conversion to the progressive stage is thought to be influenced by early relapses. Despite a new study suggesting that relapses do not drive long-term disability and proposing the latency period as an ideal target for therapeutic intervention, the relapsing phase remains a relevant treatment window.
Pugliatti, M. Nat. Rev. Neurol. 9, 129-130 (2013); published online 19 February 2013; doi:10.1038/nrneurol.2013.28