Why is there blood when my period hasn't come yet?

Why is there blood when my period hasn't come yet?

The first time a woman experiences vaginal bleeding is when she has her first menstruation during puberty. At that time, because they had no understanding of menstruation, many girls thought they had some serious disease and were even scared to tears. Later they learned that this was a very normal physiological phenomenon. So, sometimes, some female friends experience vaginal bleeding before their menstruation comes. Why is this?

Causes

1. Ovarian endocrine dysfunction can cause uterine bleeding. In addition, the rupture of ovarian follicles during menstruation can cause a temporary drop in estrogen levels, which can also cause uterine bleeding.

2. Genital tumors, such as uterine fibroids, cervical cancer and endometrial cancer, can cause vaginal bleeding.

3. Uterine bleeding related to pregnancy, such as ectopic pregnancy, threatened abortion, miscarriage, etc.

4. Genital inflammation and trauma can lead to vaginal bleeding;

5. Systemic diseases, such as abnormalities in platelet quantity and quality, coagulation dysfunction including thrombocytopenic purpura, aplastic anemia, liver damage, etc. can all cause vaginal bleeding.

6. Exogenous hormones, such as estrogen and progesterone, can cause "breakthrough bleeding" or "withdrawal bleeding".

Common diseases

1. Vaginal bleeding during childhood

The possibility of precocious puberty or genital tract malignancy should be considered.

2. Vaginal bleeding with pain during puberty

Pain in the vagina and vulva, accompanied by varying amounts of bleeding, may be caused by trauma.

3. Women of childbearing age have a small amount of vaginal bleeding between menstruation

Vaginal bleeding may be due to ovulation, which is normal.

4. Postmenopausal vaginal bleeding

Women with ectopic pregnancies also often experience vaginal bleeding after menopause, which is often accompanied by dull pain in the lower abdomen and a long bleeding time. Therefore, it cannot be simply assumed to be ovulation bleeding without confirming pregnancy. Miscarriage also has vaginal bleeding.

5. Contraceptive pills cause bleeding

Bleeding after taking birth control pills is called breakthrough bleeding.

6. Postmenopausal vaginal bleeding

Vaginal bleeding 2 years after menopause. Attention should be paid to excluding malignant lesions, such as cervical cancer, endometrial cancer, etc., and then considering inflammation, polyps, endocrine factors, etc.

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