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what are the causes of vaginitis and vaginitis

what are the causes of vaginitis and vaginitis

Etiology of vaginitis

Etiology of vaginitis

(a) the cause of the disease

There are many reasons for vaginitis, and the common ones are as follows:

① Abuse of broad-spectrum antibiotics

Long-term use of broad-spectrum antibiotics can inhibit the growth of Lactobacillus, break the space-occupying protection of Lactobacillus, and give other microorganisms the opportunity to reproduce.

Frequent sexual intercourse

After sexual intercourse, the vaginal PH value can rise to 7.2 and maintain 6-8. Frequent sexual intercourse can keep vaginal PH in neutral or alkaline environment, which is beneficial to the growth of pathogenic microorganisms. Moreover, frequent sexual intercourse also increases the infection rate of external pathogenic microorganisms.

Vaginal irrigation

Vaginal irrigation can also increase the PH value of vagina, which is not conducive to the growth of Lactobacillus.

④ Decrease of estrogen

Postmenopausal women's estrogen drops, vaginal epithelium becomes thinner and PH rises, which can also make other pathogenic bacteria become dominant bacteria and cause inflammation.

⑤ Endogenous infection

For example, Candida is not only parasitic in vagina, but also exists in human mouth and intestinal tract. These three parts can infect each other, and once the conditions are suitable, it can cause infection.

⑥ Exogenous infection

For some vaginitis can be transmitted indirectly through sexual intercourse, public baths, bathtubs, toilets, clothes, etc. Like trichomonal vaginitis.

⑦ Decreased body resistance

Self-defense function is destroyed, which also gives pathogenic microorganisms an opportunity.

(B) Pathogenesis

More than 20 kinds of microorganisms can be isolated from the vagina of normal women, among which bacteria are the main ones. Common bacteria are: Lactobacillus, Corynebacterium, non-hemolytic streptococcus, Enterococcus and Staphylococcus epidermidis, Gardnerella, Escherichia coli, Peptococcus, Mycoplasma and Candida and so on. Although there are many kinds of microorganisms in normal vagina, there is ecological balance between these microorganisms, which will not lead to vaginal inflammation.

Balance means that Lactobacillus is dominant among many microorganisms, and it can produce hydrogen peroxide and other antimicrobial factors, which can inhibit or kill other bacteria. This space-occupying protection of Lactobacillus can form acidic vaginal environment and produce nutrient competition, which is not conducive to the growth of other microorganisms. However, when human immunity is low, endocrine hormones change, or external factors such as tissue damage and sexual intercourse destroy the ecological balance of vagina, these permanent flora will become pathogenic bacteria, break through the vaginal barrier and cause infection.

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