Abnormal uterine bleeding (AUB) is an unusual vaginal bleeding from your uterus that’s irregular, either in timing, volume or duration, compared to your typical menstrual cycle. This can happen due to many factors ranging from hormonal imbalances or changes in your uterine structure to perimenopausal bleeding that’s become unreliable. https://nycgyne.com/we-treat/abnormal-uterine-bleeding/