What causes menstruation to last for half a month without stopping?

Jul 14, 2022 Source: Cainiu Health
Disease description:

I’ve had my period for nearly half a month recently, and it hasn’t stopped—this concerns me. I’d like to know: What could cause menstrual bleeding to persist for two weeks without stopping?

Doctor's answer (1)
Dr. Lv Aiming
Menstruation lasting for half a month without stopping may indicate a reproductive endocrine disorder, resulting in menstrual irregularities—such as alterations in menstrual cycle length and duration of bleeding. Additionally, organic diseases—including uterine polyps, endometrial lesions, and others—may also cause prolonged menstruation and increased menstrual flow. Prolonged, persistent vaginal bleeding warrants prompt medical attention to rule out malignant conditions.