Ovarian endocrine factor is one of the causes of female sterility. Any alteration in the stages of the ovarian cycle can lead to an anovulatory cycle, associated with a wide spectrum of menstrual alterations.
Every woman can be diagnosed with temporary anovulatory cycles. They should not to be mistaken for chronic anovulation, which is what causes sterility.
The different sections of this article have been assembled into the following table of contents.
Causes of anovulation
Chronic anovulation may have different causes in accordance with the classification given by the World Health Organisation (WHO):
- Group I or hypothalamus and pituitary disfunction.
- Group II or alteration in the hypothalamus-pituitary secretion: includes the polycystic ovarian syndrome.
- Group III or primary or secondary ovarian failure.
- Group V: women with hyperprolactinaemia and evident lesion in the hypothalamic-pituitary axis.
- Group VI: women with hyperprolactinaemia that don’t present evident lesion in the hypothalamo-hypophyseal axis.
- Group VII or amenorrhea.
Causes of menstrual irregularities
In regular menstrual cycles, there are three scenarios that may produce ovarian factor sterility. These are:
- Occult or hidden ovarian failure.
- Luteinised unruptured follicle syndrome (LUFS)
- Luteal phase defect (LPD).
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