Migraine is seen more frequently in women with multiple sclerosis (MS) than those without, according to a study released today that will be presented at the American Academy of Neurology's 62nd Annual Meeting in Toronto April 10 to April 17, 2010.
"While having a history of migraine diagnosis was linked to MS, women with migraine need to know that over 99 percent of them will never develop MS, thus having migraine should definitely not be a reason to worry about getting MS," said study author Ilya Kister, MD, with New York University School of Medicine and a member of the American Academy of Neurology. "More research is needed since it's still not known whether migraine is a risk factor for developing MS or if it is a condition that occurs at the same time as MS."
The study involved 116,678 women who were part of the Nurses' Health Study II. Of these women, 18,000 had been diagnosed with migraine at the start of the study. The women were followed every two years for 16 years. During the study, 375 women were diagnosed with MS. Of those, 82 had reported at the beginning of the study that they had been diagnosed by a doctor with migraine.
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The study found that women with a migraine diagnosis at the beginning of the study were 47 percent more likely to develop MS than women without a diagnosis. The results were the same regardless of age, where they lived, Scandinavian ancestry, vitamin D levels, smoking status and body mass index.