Postmenopausal hormone therapy and migraine headache.
BACKGROUND
Estrogen withdrawal has been described as a trigger for migraine headache, and some studies suggest that estrogen and progestin may exacerbate migraine. No population-based studies have examined the association between hormone therapy (HT) and migraine among postmenopausal women.


METHODS
To examine the association between HT and migraine headache in postmenopausal women, we used self-report of HT use, HT characteristics, and migraine headache within the past year among 17,107 postmenopausal female health professionals enrolled in the Women's Health Study.


RESULTS
Analyses were restricted to the 17,107 of 21,788 postmenopausal women who were postmenopausal at baseline and who were never (38.5%) or current (61.5%) users of HT. Of these, 1,909 (11.2%) experienced migraine headache within the last year. Women with migraine headache were significantly younger, had a younger age at menopause, were more likely to have had a surgical menopause, and were more likely to be current users of HT. After adjusting for age, race, smoking, alcohol use, ever use of oral contraception, age at menopause, and menopause type, the odds ratio (OR) for migraine headache was 1.42 (95% CI 1.24-1.62) for women who were current users of HT compared with never users. ORs were similar for users of estrogen alone (OR 1.39, 95% CI 1.14-1.69) and users of both estrogen and progestin (OR 1.41, 95% CI 1.22-1.63).


CONCLUSIONS
In this cross-sectional study, current HT use was associated with higher rates of migraine headache than nonuse. Clinical trials are needed to determine if HT increases the incidence of migraine in postmenopausal women.
Misakian
Anastasia L
AL
University of California-San Diego School of Medicine, San Diego, California, USA.
Langer
Robert D
RD
Bensenor
Isabela M
IM
Cook
Nancy R
NR
Manson
Joann E
JE
Buring
Julie E
JE
Rexrode
Kathryn M
KM
D000368:Aged; D003430:Cross-Sectional Studies; D015914:Estrogen Replacement Therapy / Q000009:adverse effects / Q000706:statistics & numerical data; D005260:Female; D006801:Humans; D008875:Middle Aged; D008881:Migraine Disorders / Q000139:chemically induced* / Q000453:epidemiology / Q000523:psychology; D015999:Multivariate Analysis; D016017:Odds Ratio; D017698:Postmenopause / Q000187:drug effects; D015995:Prevalence; D012307:Risk Factors; D013997:Time Factors; D014481:United States / Q000453:epidemiology; D016387:Women's Health