Why does a woman's menstrual period last a long time

Patient's question:

No

Doctor's answer:

Menstrual prolongation refers to a normal menstrual cycle where the duration exceeds 7 days, or even takes up to 2 weeks to subside. It is often caused by incomplete luteal regression, prolonged endometrial repair, pelvic inflammatory disease, endometritis, or the insertion of an intrauterine device. It is necessary to seek medical attention promptly to diagnose the underlying cause and receive appropriate treatment.