MOA
Decreased estrogen production due to age-linked decline in number of ovarian follicle
Onset
At 51 years, earlier in smokers
Preceding symptoms
4-5 years of abn menstrual cycles.
Source of estrogen after menopause
Source of estrogen (estrone) after menopause becomes peripheral conversion of androgens.
Increased androgens causes hirsutism
Best confirmation
Increased FSH:
due to loss of freeback for FSH due to low estrogen.
Hormonal changes
Low estrogen
HIGH HIGH FSH
high LH (no surge)
high GnRH
Symptoms
HHAVOC: Hirsutism, Hot flashes, Atropy of Vagina Osteoporosis Coronary artery disease
If before 40 yrs of age
Premature ovarian failure.