Four days after menstruation, there is blood in the vagina

Normal people will have leucorrhea within a few days after the end of menstruation, but this leucorrhea is just ordinary secretion used to moisturize the vagina. Generally, leucorrhea will officially appear 14 days before menstruation. The occurrence of leucorrhea includes many factors. The most common one is that the leucorrhea will have blood four days after menstruation. This is not necessarily leucorrhea. You need to go to the hospital to check to see if it is due to these reasons.

Causes and treatment

The weakly acidic environment of the vagina can maintain the self-cleaning function of the vagina

Western medicine believes that the vaginal environment is often unstable due to the host's metabolic products, the bacteria's own products and exogenous factors (sexual intercourse, douching and other interference). The vaginal flora is very complex. In addition to protozoa and fungi, it also includes many aerobic and anaerobic bacteria. These microorganisms can be divided into commensal and pathological ones. They all grow in a common environment and there may be antagonism between the microorganisms. Another factor that affects its growth is the hydrogen ion concentration. At pH 3.8-4.2, it is conducive to the reproduction of commensal bacteria, especially Lactobacillus, which is the main species in a healthy vagina. The density in vaginal fluid can reach 105-108 ml. When the vagina is infected by microorganisms, if Lactobacillus is dominant and can still maintain pH 3.8-4.2, it will not cause disease. Moreover, Lactobacillus can also produce H202, which is toxic to other microorganisms and inhibits their reproduction.

Others such as Streptococcus lactis, Enterobacter, Proteus, Gavagelococcus, and Veillonella are common in the lower end of the vagina and usually do not cause symptoms. The vaginal flora restrain each other, preventing pathological bacteria from having any effect. If this balance is disrupted, the mutual restraint disappears, so the hydrogen ion concentration decreases, lactobacilli lose their advantage, and pathological bacteria are able to multiply, resulting in symptoms.

Bacterial vaginosis is a mixed infection caused by a decrease in lactobacilli in the vagina and a massive proliferation of other bacteria, mainly Gardnerella, various anaerobic bacteria and mycoplasma. Trichomonas vaginitis is caused by Trichomonas vaginalis and is a sexually transmitted disease. It is transmitted through direct transmission (through sexual intercourse, 75% of the semen of the spouse with Trichomonas vaginitis can be found in Trichomonas) and indirect transmission (through various bathing utensils, swimming pools, public toilets or contaminated clothes and equipment). In the census, the detection rate of Trichomonas was 3.56%, among which some women had no inflammation symptoms and were called carriers.

Candidal vaginitis is mainly caused by Candida albicans. A small amount of these fungi can often parasitize in a normal and healthy vagina, but they generally do not cause disease. When the body's immune function is low or the flora is out of balance, they will multiply and cause disease. Therefore, it is more common in pregnant women, those with diabetes, those using immunosuppressants, and those using antibiotics for a long time. In addition, it is also easy to be infected in a humid and hot environment.

According to statistics, about 10% of non-pregnant women and one-third of pregnant women are infected with this disease, but few people seek medical treatment because the symptoms are obvious. As for the incidence of vaginitis caused by non-albicans Candida (such as Torulopsis glabrata), it increased from 9.9% in 1988 to 17.2% in 1995. Women infected with HIV were twice as likely to be infected with non-albicans Candida than those infected with HIV. Women with recurrent candidal vaginitis were 2.47 times more likely to be infected with non-albicans Candida than with albicans.