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Study, 1991

Do women with premenstrual syndrome have different symptom severity in different menstrual cycles?

Symptoms were mostly stable between cycles. However, women with different PMS patterns behaved differently: those with symptoms only before menstruation had worse symptoms during the first cycle, while those with symptoms at other times felt better in the first cycle.

Moderate study design 54 women seeking help for premenstrual syndrome

What they did

Fifty-four women seeking help for PMS rated 12 different symptoms every day for two consecutive menstrual cycles using a rating scale. Blood samples were taken weekly to confirm ovulation.

What they found

When looking at all women together across both cycles, only one symptom showed a clear difference. The researchers divided women into two groups based on their symptom patterns: pure PMS (symptoms only before menstruation) and premenstrual aggravation (symptoms at other times too). Women with pure PMS had significantly worse symptoms in the first cycle. Women with premenstrual aggravation had significantly better symptoms in the first cycle compared to the second.

What it means for you

PMS symptoms are fairly stable from cycle to cycle for most women, but severity can vary. Different patterns of PMS may change in different ways. This study describes what happens but not why these changes occur.

54

Women studied

12

Different symptoms tracked

2

Consecutive menstrual cycles monitored

About the study

Original title
Premenstrual tension syndrome: A study comparing symptom ratings during two consecutive menstrual cycles
Authors
Ulla‐Britt Ekholm, Stefan Hammarbäck, Torbjörn Carl Bäckström
Journal
Journal of Psychosomatic Obstetrics & Gynecology
Year
1991
Study design
Study
Participants
54

Topics