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Letter to the Editor

We were very interested in recent articles by Chen and Leviton1 and Granella et al,2 in which the changes in migrainous headache during pregnancy were discussed. In a preliminary study, we also explored these changes, including those in the headache after the pregnancy. Further, since stress and hormonal changes have been mentioned most frequently as precipitating factors of migraine,3,.5 we also investigated if stress and the social support experienced by the women in each trimester were associated with the headache changes. From a group of 432 pregnant women participating in a study on the relationship between stress and pregnancy outcome, 37 women with migraine were selected on the basis of IHS criteria. They completed a questionnaire in each trimester (12 to 16 weeks, 24 to 26 weeks, and 34 to 36 weeks) asking whether or not the migraine improved, stayed the same, or worsened with respect to prior to pregnancy. This was further specified into frequency, intensity, and length of the headaches. In addition they answered validated questionnaires on every day stressors, psychomatic complaints, and social support. Finally, a questionnaire about the migraine after delivery in comparison with that during pregnancy was sent to them 1 year later.