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Cohort study, 1999

Does PMDD affect mood, memory and thinking differently across the menstrual cycle?

Mood got worse in the luteal (premenstrual) phase for women with PMDD, but memory and thinking problems in that phase happened in both PMDD and non-PMDD women equally, based on this very small study.

Early or limited evidence 10 women with PMDD and 10 age-matched women without PMDD

What they did

Researchers tested 10 women with PMDD and 10 age-matched women without PMDD on mood, memory, and thinking tasks during both the follicular and luteal phases of their cycles, in a randomized order.

What they found

A standard depression scale (the BDI) was significantly higher in the luteal phase only for women with PMDD, not for controls. Working memory was worse in the luteal phase for both groups, with no significant difference between PMDD and control women.

What it means for you

A common mood questionnaire does pick up on premenstrual mood changes in PMDD, but the memory dip around this time of the cycle seems to happen to most women, not just those with PMDD. The sample was very small (10 per group), so results need confirming in bigger studies.

n=10

women with PMDD studied

n=10

control women studied

About the study

Original title
Mood, neuropsychological function and cognitions in premenstrual dysphoric disorder
Authors
Man MS, MacMillan I, Scott J et al.
Journal
Psychological medicine
Year
1999
Study design
Cohort study
Participants
10
What was tested
No treatment tested; mood and cognitive tests were compared across cycle phases

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