The feature of anovular uterine bleeding disorder is irregular menstrual cycle, heavy menstruation and dirty blood.The menstrual cycle can last for ten some days and even several months.

• 临床分为排卵性和无排卵性两类，无排卵子宫异常出血的特点为月经周期不规则，经量多和或淋漓不净，经期长达10馀天，甚至数月。