<< Emergency Department Management Of Vaginal Bleeding In The Nonpregnant Patient

Differential Diagnosis

In adolescent girls, the most common cause of abnormal vaginal bleeding is immaturity of the hypothalamic-pituitary-ovarian axis, which results in persistent anovulation.12 The beginning of a woman’s menstrual life is characterized by irregularity. It is not until the third year after menarche that the majority of menstrual cycles occur at the adult interval of 28 days,13 and it takes 6 years for an individual to establish her normal cycle length.

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