KnowraAnovulationLinked fromLinked fromThe 7 pages that link to Anovulation, each with the reason it gives.All 7Related 4Compared with 3Menstrual cycleCompared with: Bleeding may occur without the cycle’s usual egg release and luteal phase.OvulationCompared with: It is the failure of the egg-release event that defines ovulation.Polycystic ovary syndromeRelated: Irregular or absent ovulation helps explain unpredictable periods and some fertility difficulties.Luteal phaseCompared with: Without ovulation, a normal corpus-luteum-driven luteal phase does not occur.Heavy menstrual bleedingRelated: Without ovulation, irregular hormonal stimulation can produce a thickened lining that sheds heavily.ClomifeneRelated: Clomifene is used when absent or infrequent ovulation contributes to infertility.Vaginal bleedingRelated: Without regular ovulation, unstable uterine lining can shed unpredictably.