Failure of preventive treatments in migraine: an observational retrospective study in a tertiary headache center.

BMC Neurol · 2020 · PMC7345518 · PMID 32593298

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an evident trendno p-value reported

An Italian longitudinal study on migraine evolution over 3 months of observation reported an evident trend toward improvement in disability and social activity, independent of the use of preventive treatments [ 30 ].

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