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Cohort study, 1981

What causes nipple discharge in women with normal periods?

Nipple discharge may be caused by low thyroid hormone or high stress hormones and anxiety. These were found in different groups of women with this symptom.

Early or limited evidence 12 women with nipple discharge and normal menstrual cycles

What they did

Studied 12 women with nipple discharge who had normal periods and no pituitary tumors, measuring hormone levels and psychological health.

What they found

Eight women showed low thyroid function with high prolactin hormone. Four women showed high stress hormones (epinephrine and norepinephrine) combined with anxiety and neuroticism on psychological tests.

What it means for you

Nipple discharge may signal thyroid problems or stress-related hormone changes. Treatment included thyroid replacement and psychological therapy. This is a very small study that describes patterns but cannot prove cause and effect.

12

women with nipple discharge studied

8

with thyroid dysfunction

4

with high stress hormones

About the study

Original title
Endocrinologic and psychologic aspects of galactorrhea associated with normal menstrual cycles
Authors
Naguib YA, Darwish NA, Shaarawy M et al.
Journal
International journal of gynaecology and obstetrics: the official organ of the International Federation of Gynaecology and Obstetrics
Year
1981
Study design
Cohort study
What was tested
None (diagnostic and observational study)

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