Cognitive deficits linked to MS relapse 'persist longer than thought'

The finding underscores the benefit to patients of reducing relapse rates, study authors say

Impaired cognition is measurable up to a month before relapse in patients with MS and can last 1.5 years before returning to normal, Swedish researchers say.

Results from their nationwide cohort study suggest that the effects of relapse on cognition are longer than previously thought and underline the importance of reducing relapse to preserve cognitive function.

Using data from nearly 3900 adults (mean age 32) with incident relapsing-remitting MS, the authors quantified the

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