Study finds 'aura' migraines double the risk of strokes

Women who use contraceptives that contain estrogen boost the odds of suffering a stroke even further.

Up to 20 percent of adults — three-quarters of them women — suffer migraine headaches often characterized by vomiting or extreme sensitivity to light and noise. Up to a third of these patients experience a so-called aura before or during the headache, typically described as a strange light, unpleasant smell or confusing thoughts.

Earlier research has uncovered a correlation between migraines and strokes, but did not distinguish between different kinds of migraines, or investigate possible links to other types of cardiovascular disease.

Scientists led by Markus Schurks of Brigham and Women's Hospital in Boston sifted through nine studies in an effort to fill in some of these gaps. They found that migraines with aura push up the risk of strokes caused by reduced blood flow two fold.

The researchers recommend that young women who have migraine with aura should stop smoking and use estrogen-free birth control methods.

“Clinicians need to identify young women with migraine, particularly those who are seeking estrogen-containing hormonal contraception,” Elizabeth Loder of Harvard Medical School concurred in a commentary, also in the British Medical Journal.

The absolute risk of stroke for most patients with migraine remains low, Loder said, “so a doubling of risk is not cause for panic.”

“At a population level, however, this risk deserves attention between the prevalence of migraine is so high,” she added.

Subscribe to The China Post and save 25%. Click here

SharePrintEmail

Write a Comment

Enter your comments - 3000 characters max

Type in image code

Submit

 Receive China Post promos Respond to this email