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Preventive (also called prophylactic) treatment of migraines can be an important component of migraine management. Such treatments can take many forms, including everything from surgery, taking certain drugs or nutritional supplements, to lifestyle alterations such as increased exercise and avoidance of migraine triggers. The goals of preventive therapy are to reduce the frequency, painfulness, and/or duration of migraines, and to increase the effectiveness of abortive therapy. Another reason to pursue these goals is to avoid medication overuse headache (MOH), otherwise known as rebound headache, which is a common problem among migraineurs. This is believed to occur in part due to overuse of pain medications, and can result in chronic daily headache. Standards for the conducts of trials of preventive medications have been proposed by the Task Force of the International Headache Society Clinical Trials Subcommittee. ==Behavioral treatments== Exercise for 15–20 minutes per day maybe helpful for reducing the frequency of migraines.〔(http://www.headachedrugs.com/ )〕 Diet, visualization, and self-hypnosis are also alternative treatments and prevention approaches. General dietary restriction has not been demonstrated to be an effective approach to treating migraine. Sexual activity has been reported by a proportion of male and female migraine sufferers to relieve migraine pain significantly in some cases. 抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』 ■ウィキペディアで「Prevention of migraines」の詳細全文を読む スポンサード リンク
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