Premenstrual Syndrome Symptoms

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Causes


It is not clear what causes of premenstrual syndrome. Fluctuations in gonadal hormones (progesterone or estrogen) and brain chemicals may play a role although their exact significance is unclear. Hormonal levels seem to be the same in women whether or not they have premenstrual syndrome. It is possible that women with premenstrual syndrome are somehow more sensitive to these changing levels of hormones.

The Hypothalamic-Pituitary-Adrenal (HPA) System

The hypothalamic-pituitary-adrenal (HPA)...

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