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Survey study, 2002

Does the premenstrual period trigger multiple sclerosis flare-ups in women?

In about 42% of women with MS, flare-ups were more likely during the premenstrual phase, suggesting it may be a trigger for some women. The evidence is not definitive as this was a small observational study.

Early or limited evidence 56 women with relapsing multiple sclerosis and regular menstrual cycles

What they did

Cross-sectional study of 56 women with relapsing MS and regular periods. They reviewed 2 years of medical records and questionnaires about when their flare-ups occurred.

What they found

42% had flare-ups starting in the premenstrual phase. Within this group, 45% had all their flare-ups during the premenstrual phase. Birth control pills did not prevent this pattern, and there was no relationship to PMS itself.

What it means for you

The premenstrual period may trigger MS flare-ups in some women. A major limitation is the small sample size and that they only looked back at past records instead of following women forward.

42%

Had flare-ups in premenstrual phase

45%

Had all flare-ups in premenstrual phase

56

Women with MS studied

About the study

Original title
The premenstrual period and exacerbations in multiple sclerosis
Authors
Zorgdrager A, De Keyser J
Journal
European neurology
Year
2002
Study design
Survey study
Participants
56
What was tested
None. Observational study of medical records and questionnaires.

Topics