Definition: Bleeding intervals longer than 35 days. Oligomenorrhea may be transient during the transition to a normal cycle. Evaluation of the physical status, sexual development, and the bleeding pattern is sufficient in this setting.

But oligomenorrhea…

Definition: Bleeding intervals shorter than 21 days. This anomaly is quite frequent in puberty and adolescence and is caused by hormonal imbalance within an unstable cycle. There may be an estrogen deficit in an anovulatory cycle…

Metrorrhagia, characterized by bleeding episodes without a recognizable cycle, is a frequent form of irregular bleeding in adolescence. Bleeding occurs at different intervals with different durations and differs in amount from spotting to severe. The reason…

Definition: Severe until excessive bleeding within a quite regular cycle, blood loss >80 ml. Severe bleeding is clinically important, particularly if it is combined with menorrhagia. Blood loss and resulting symptoms can be considerable. The reason…

Menorrhagia
Menorrhagia is defined as prolonged bleeding (longer than 7 days) within a more or less normal interval. The flow may be severe. It is caused…