People with Fibromyalgia May Be Prone to Migraines and Vice Versa, Study Suggests

People with Fibromyalgia May Be Prone to Migraines and Vice Versa, Study Suggests
A link appears to exist between fibromyalgia and migraines, research using data on a large of people with both these conditions suggests. Its results also point to fibromyalgia as having a "stronger predictive power for the onset of migraine than did migraine for the onset" of  fibromyalgia, although the link between the two appeared to work both ways. The study, "Bidirectional association between migraine and fibromyalgia: retrospective cohort analyses of two populations," was published in the journal BMJ Open. One of the common symptoms of fibromyalgia is headaches. Migraines — a particularly acute type of headache — have some of the same symptoms as fibromyalgia. The two conditions can both occur in the same person; however, it isn't totally clear whether a person with fibromyalgia is significantly more likely to develop migraines, or the other way around. To try to untangle this connection, researchers analyzed data from the Longitudinal Health Insurance Database that stores data from the National Health Insurance of Taiwan, which insures 99% of the Taiwanese population. They identified patients for two cohorts (groups): The fibromyalgia cohort included 33,216 patients without a history of migraine who were diagnosed with fibromyalgia between 2000 and 2010. The migraine cohort included 17,420 patients with a history of migraine but not fibromyalgia, diagnosed in the same time period. For each group, the researchers matched patients with a control cohort without the respective disease but similar in terms of age, sex, etc., and followed from the same time-point. Each control group included
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