Anovulatory Cycles Information
Uterine bleeding that is irregular in occurence, unpredictable as to amount and duration of flow, and usually painless is called dysfunctional or Anovulatory uterine bleeding.
Transient distruption of ovulatory cycles occurs most often in the early menarcheal years, during the perimenopausal period, or as the consequence of a variety of stresses and intercurrent illness. Persistent dysfunctional uterine bleeding during reproductive years can occur in several organic diseases that affect ovarian function and is most often due to estrogen breakthrough bleeding.
Estrogen breakthrough bleeding occurs when estrogen stimulatio of the endometrium is continous and is not interrupted by cyclic progesterone withdrawal, as can occur in polycystic ovarian disease.
Causes of Anovulatory Cycles
This type of bleeding is the result of a failure of normal follicular maturation with consequent anovulation and may be either transient or chronic.