• Kjersti Grøtta Vetvik and Michael Bjørn Russell.
• Head and Neck Research Group, Research Centre, Akershus University Hospital, 1478, Lørenskog, Oslo, Norway.
• Curr Pain Headache Rep. 2011 Oct 1; 15 (5): 339-42.

AbstractMigraine is the second most common headache condition next to tension-type headache. Up to one fourth of all women have migraine, and 20% of them experience migraine without aura attack in at least two thirds of their menstrual cycles. The current literature is analyzed in response to the question of whether menstrual and nonmenstrual migraine attacks are different. The different studies provide conflicting results, so it is not possible to answer the question firmly. Future studies should be based on the general population. Collection of both prospective and retrospective data is warranted, and headache diagnosis base on interviews by physicians with interest in headache are more precise than lay interviews or questionnaires.

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