[Migraine and risk of cerebral infarction]

C Tzourio, M G Bousser
Revue Neurologique 2000, 156: 4S47-56
In this paper we review the evidence that migraine is associated with ischemic stroke, emphasizing potential biases, factors which may influence the association, potential mechanisms, and potential public health impact. Consistency of case-control findings from several countries and supporting evidence from prospective data suggest that the association is not an artifact of study design or execution. However, it is less clear whether migraine without aura is associated with stroke or whether the association is restricted to migraine with aura. Similarly, there are few data examining the magnitude of the association among nonusers of oral contraceptives compared to those who use low estrogen oral contraceptives. Moreover, there is still no convincing evidence on the mechanisms that would be implied and on the groups of migraineurs really at risk of ischemic stroke. Despite the considerable advances in our understanding of the relationship between migraine and stroke, there are many gaps in the data needed for public health recommendations.

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