Editing Anovulation (section)

===Associated conditions===
For most women, alteration of [[menstrual cycle|menstrual periods]] is the principal indication of chronic anovulation. Ovulatory menstrual periods tend to be regular and predictable in terms of cycle length, duration and heaviness of bleeding, and other symptoms. Ovulatory periods are often accompanied by midcycle symptoms such as [[mittelschmerz]] or premenstrual symptoms. In contrast, anovulation usually manifests itself as irregularity of menstrual periods, that is, unpredictable variability of intervals, duration, or bleeding. Anovulation can also cause cessation of periods ([[amenorrhea#Secondary amenorrhoea|secondary amenorrhea]]) or excessive bleeding ([[dysfunctional uterine bleeding]]). [[Mittelschmerz]] and premenstrual symptoms tend to be absent or reduced when a woman is anovulatory.