Journal
AMERICAN JOURNAL OF OBSTETRICS AND GYNECOLOGY
Volume 193, Issue 3, Pages 636-649Publisher
MOSBY, INC
DOI: 10.1016/j.ajog.2004.12.089
Keywords
oral contraceptives; migraine; headache; systematic review
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Objective: We conducted a 2-part systematic review of published studies to examine the evidence that combination oral contraceptives can aggravate or cause headache. Study design: We used trials with a control group to assess headache risk that was attributable to oral contraceptive use and prospective cohort trials to answer important clinical questions about the natural history and treatment response of headache that occurs with oral contraceptive use. Results: Because of differences in study populations, oral contraceptive formulations, trial end points and trial duration, it was not possible to pool data; but the evidence supports several conclusions. There is little indication that oral contraceptives have a clinically important effect on headache activity in most women. Conclusion: Headache that occurs during early cycles of oral contraceptive use tends to improve or disappear with continued use. No evidence supports the common clinical practice of switching oral contraceptives to treat headache; however, manipulating the extent or duration of estrogen withdrawal may provide benefit. (c) 2005 Mosby, Inc. All rights reserved.
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