What is abnormal uterine bleeding?
Any of the following situations would be considered abnormal bleeding:
- Bleeding between periods
- Bleeding after sex
- Spotting anytime in the menstrual cycle
- Bleeding heavier or for more days than normal
- Bleeding after menopause
- Menstrual cycles that are longer than 35 days or shorter than 21 days are abnormal. The lack of periods for 3–6 months (amenorrhea) also is abnormal.
What causes abnormal uterine bleeding?
Causes can include the following:
- Ectopic pregnancy
- Use of some birth control methods, such as an intrauterine device (IUD) or birth control pills
- Infection of the uterus or cervix
- Problems with blood clotting
- Endometrial hyperplasia
- Certain types of cancer, such as cancer of the uterus, cervix, or vagina
- Polycystic ovary syndrome