Study finds potential causality between blood clot factors and migraine with aura

Nearly 15 percent of the U.S. population experiences migraine. One sub-type of migraine that is not well understood is migraine with aura (MA). Individuals who experience MA often see flashing lights, blind spots, or jagged lines in their visual field prior to onset of their migraine headaches. Individuals who experience MA also face a heightened risk of stroke and cardiovascular disease, although scientists continue to explore why this correlation exists. In a new study from Brigham and Women’s Hospital, researchers used a technique in genetic analysis termed Mendelian randomization to examine 12 coagulation measures, uncovering four that are associated with migraine susceptibility. Interestingly, scientists only observed these associations in individuals who experience MA and did not observe such associations among individuals who experience migraine without aura (MO). Their research suggests that these hemostatic factors could potentially have a causal role in MA. Their results are published in Neurology.

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