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relapses with either full recovery or some remaining neurological signs/symptoms and residual deficit on recovery.
disease progression from onset, without plateaus or remissions or with occasional plateaus and temporary minor improvements
initial relapsing-remitting course, followed by progression at a variable rate that may also include occasional relapses and minor remissions
progressive disease from onset but without clear acute relapses that may or may not have some recovery or remission.
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