Many women always feel that they have leukorrhea flow out, it is thought that there is inflammation, like to use “pads”, also like to buy some “care solution”, “cleaning solution” to wash the vulva. Flushing vagina, individual women also use their fingers wrapped in a towel to the vagina to scrub, in order to completely remove the leukorrhea, the name: “health care”, but not only did not wash the leukorrhea clean, but the more you wash the more. So wash not only wash more and more leukorrhea, but also outside the bacteria “wash” into the vagina inside, the more clean, the more unclean, the more unclean the more wash, the formation of a women’s “clean” strange circle. In life, there are indeed many women who like to clean into this circle, and eventually because of the serious vaginitis affect their daily lives to the hospital to find a gynecologist for treatment. The following is a detailed discussion of why the vulva will wash the more itchy reasons: a healthy human body is because the body has a sound defense system to resist the invasion of a variety of external disease-causing factors, and the body also exists in a balanced ecological environment to keep the body inside the relatively constant conditions for all physiological and psychological activities. The combination of these two is the body’s immunity. The opening of the vagina is a direct communication with the outside world, and the external substances entering the vagina can pass through the uterus and fallopian tubes into the pelvic and abdominal cavities. The vagina has a barrier of defense, and this barrier is the ecological environment within the vagina. The balance of the ecology within the vagina must be maintained for the vagina to function as a barrier. The vaginal ecosystem consists of the vaginal flora and the immune system (immune antibodies, white blood cells, etc.), and they are in balance. In a healthy person, the balance of the vaginal ecosystem is like an interlocking chain; if one of the links is disrupted, the balance is out of whack and the vaginal barrier is destroyed. Estrogen, Lactobacillus and vaginal pH play important roles in maintaining vaginal ecological balance. Under physiological conditions, estrogen causes the vaginal epithelium to thicken and become rich in glycogen, increasing resistance to pathogens. Glycogen is broken down into lactic acid under the action of Lactobacillus vaginalis, so that the vagina is maintained in an acidic environment (pH3.8-4.4), inhibiting the growth of other pathogens, which is the “vaginal self-purification effect”. Therefore, in the normal vaginal flora, Lactobacillus, which can produce hydrogen peroxide (H2O2), is the dominant bacterium. In addition to maintaining the acidic environment of the vagina, Lactobacillus produces hydrogen peroxide, which, in coordination with the anti-microbial factors secreted by the vaginal wall and the cervical canal, can inhibit or kill the over-propagation of other bacteria or microorganisms. Long-term application of antibiotics will inhibit the growth of Lactobacillus, or when the body’s immunity is low, can make the vagina other bacteria and microorganisms multiply to become the dominant bacteria, which is the condition of pathogenic bacteria leading to vaginitis. Thus, maintaining the ecological balance in the vagina itself is a natural line of defense to avoid infection. Blindly using drugs to wash the vulva or douche the vagina, not only easy to bring pathogenic bacteria into the vagina, but also, due to the external washing solution will change the normal vaginal pH, the normal distribution of bacteria in the vagina mutual constraints relationship has been damaged, the condition of pathogenic bacteria reproduce in large quantities resulting in inflammation of the vagina, but also to the outside of the strongly invasive gonococcus, yeast, trichomonas, and so on, to take advantage of the gap, the occurrence of the should not have occurred in the severe Vaginitis and cervicitis. Why do you blindly use “health care”, “sterilization”, “cleaning” pads or “health care” for a long time? “Nursing” “cleaning” liquid, vulvovaginitis is not only not cured, but also feel the vulva and vagina is always itching discomfort? This has to start from the human skin mucous membrane pH: normal skin pH is 5.0-5.6 between the surface of the skin has a layer of acidic film, can prevent and inhibit the growth of bacteria and pathogenic bacteria infringement, play a role in protecting the skin and moisturizing. The pH value of different parts of the human skin will also have a small difference, the more oil secretion of the parts of the skin, the lower the pH value, close to the pH value of 5.0, such as the face and limbs of the skin; on the contrary, the secretion of oil less parts of the skin, skin, skin, the more dry, the higher the pH value, the more alkaline, close to the pH value of 5.6, such as the chest, abdomen and the vulva of the skin. pH value of the place, the skin is easy to However, skin in places with a low pH is prone to skin sensitization and itchiness. Fortunately, after a long period of evolution, the skin on the face and limbs, which is most exposed to ultraviolet rays from the sun, has a lower pH value and is less prone to aging. Therefore, the pH value of the best “cosmetics” that are applied to the face and limbs is set at pH 5.5-7.0, so that it is suitable for the face skin with a lot of oil and a low pH value, and does not easily cause aging of the face skin. The vulvar skin, which is not exposed to the sun’s ultraviolet rays, has a low pH and dry skin texture, making it less uncomfortable to feel greasy and moist all day long. Normal women’s vaginal pH is between 3.8-4.4, because in this pH environment, the most suitable for the proliferation of lactobacilli in the vagina, at the same time, the vaginal mucosal cells will also secrete more glycogen for the growth of lactobacilli, and other parasitic conditions of disease-causing microorganisms will be inhibited, so that the formation of a benign cycle chain. Therefore, the normal female vaginal environment has a “self-purifying effect”. However, when the pH of the vagina changes, it is very vulnerable to invasion by external microorganisms or the proliferation of conditionally pathogenic microorganisms in the vagina, resulting in vaginitis. For example, Trichomonas vaginalis grows in a humid environment with a pH of 5.2-6.6, but not in an environment with a pH of 5 or 7.5 or higher. Water has a pH of 6.8-7.0. If you douche with water, the pH in the vagina will rise from about 4.0 to over 5.2, making it very suitable for Trichomonas to grow and reproduce. Trichomonas can consume or phagocytose the glycogen in the vaginal epithelial cells, hindering the production of lactic acid and raising the vaginal pH. Therefore, if the vaginal pH of a patient with trichomonas vaginitis is 5.0-6.5, the doctor will use acidic potassium permanganate or acetic acid solution to douche the vagina, in order to lower the vaginal pH and inhibit the reproduction of Trichomonas, and also to use Mirex to kill Trichomonas. Another example is that pseudofilamentous yeasts (Candida, molds) are suited to multiply in the vagina at a pH of 4.0-4.7 (usually less than 4.5). In addition to being infected from the outside and entering the vagina, Pseudomonas can also parasitize the vagina, intestines, and oral cavity, and once the conditions are right for their reproduction, they can cause infections that lead to disease, and are therefore conditionally pathogenic. When repeated use of douching solution (e.g. “health”, “care”, “cleaning” solution with pH value set at 3.5 or 4.0) after douching the vagina, the pH value inside the vagina will change (increase in acidity), which is favorable to the vagina. (increased acidity), which favors the growth of Pseudomonas aeruginosa. During pregnancy and prolonged elevation of blood sugar (diabetes), there is an increase in acidity due to the increase in glycogen in the vaginal tissue, which favors the growth of Pseudomonas aeruginosa. Prolonged use of antibiotics inhibits the growth of Lactobacillus in the vagina, which is conducive to the reproduction of Pseudomonas aeruginosa. Long-term use of “pads” (especially with the drug pads), wearing tight chemical fiber panties and obesity, can make the local temperature and humidity in the pubic area increased, suitable for Pseudomonas aeruginosa reproduction caused by infection. Pseudomonal yeasts tend to multiply in the glycogen-rich and acidic vagina, and when a Pseudomonal yeast infection occurs, a variety of pathogenic microorganisms can easily occur at the same time. Therefore, when suffering from Pseudomonas (Candida, mold) vaginitis, the doctor will ask the patient to wash the vulva with sodium bicarbonate solution, and wipe the vagina with saturated sodium bicarbonate solution to raise the pH level in the vagina to inhibit the growth of Pseudomonas, and at the same time, place medication to treat molds in the vagina. Bacterial vaginosis is a mixed infection caused by an imbalance of the normal flora in the vagina, a decrease in the hydrogen peroxide-producing Lactobacillus in the vagina and a proliferation of other bacteria, mainly anaerobic bacteria such as Gardnerella, Actinobacillus curvorum, Bacteroidetes, Streptococcus pepticus and other conditional pathogens such as Mycoplasma, resulting in an increase in the vaginal secretion (leucorrhoea), with fishy odor and no obvious itching. As the lactobacilli in the vagina are reduced, or even completely inhibited from growing, the pH in the vagina is elevated, with a pH between 5.0 and 5.7. Therefore, doctors use anti-anaerobic drugs (e.g., metronidazole) and macrolides, which (especially metronidazole) do not affect the growth of Lactobacillus and only inhibit the growth of anaerobic bacteria and mycoplasma, making them preferable therapeutic drugs. Inhibit the growth of anaerobic bacteria and mycoplasma, and at the same time make Lactobacillus become the dominant bacteria again, then the pH value in the vagina will gradually return to the normal pH range, so that the defense barrier of the vagina is re-established. According to the relevant quality monitoring department announced the current domestic and foreign production of “feminine care solution” pH value between 4.0-4.5 pH value. The quality of the “health” “care” liquid some of the pH value is set at 3.5, there are some other pH value is set at 4.0, there are also some of the pH value is set at 4.5. selection must pay attention to its pH value, so as to avoid improper use. If the vaginal pH value is normal in the case of long-term use of pH 3.5 solution to wash the vulva and douche the vagina, the vaginal pH will be lowered, the acidity increases, which is conducive to the growth of yeast, the formation of mycosis fungoides vaginitis. If you wash the vulva and douche the vagina with a solution of pH 4.5 for a long period of time when the pH in the vagina is normal, the pH of the vagina rises, the acidity decreases (the alkalinity increases), inhibiting the growth of lactobacilli and favoring the growth of conditionally pathogenic bacteria in the vagina, forming bacterial vaginosis. It is especially worth mentioning: because the pH value of human skin (including the skin of the vulva area) is between 5.0-5.6, while the pH value of the mucous membrane of the vulva on the inside of the labia minora and the mucous membrane around the urethral orifice to the vaginal opening (that is, the mucous membrane of the vaginal vestibule area) is about 5.0, and if you wash the vulva using a solution with a pH value of 3.5-4.5 for a long period of time, you will have to use a solution that has an alkaline value of 3.5-4.5 to wash the vulva. 4.5 solution to wash the vulva, not only will the skin, mucous membrane surface to play a protective role in the oil film and acidic membrane washed off, so that the local skin, mucous membrane loss of moisturizing and protective effect, at the same time, so that the local skin of the parasitic bacteria and pathogenic bacteria can be reproduced in large quantities, wreak havoc everywhere, it is extremely easy to invade the vagina to cause disease. By the external washing solution caused by the low pH value of the skin, mucous membranes are prone to skin, mucous membrane sensitivity, but also easy to make the vulvar skin, mucous membrane damage, resulting in “chapped”, and then produce the skin, mucous membrane itching sensation. Occurred when the skin, mucous membrane itching, again using the external washing solution washing, because there are some solutions containing mint components, so that people wash after a short period of cool and pleasant feeling, so that stimulate you like to wash every day, do not wash on the uncomfortable, for a long time, like an addiction, the more the more itchy washing, the author often encountered in the clinical work of the blind use of the external washing of the drug, even if it is to stop the external washing of the solution, some people in two or three months. People in two or three months will have intermittent feeling of itching discomfort, always want to use the external washing solution again to wash a comfortable. In fact, by soaking or washing the vulva with medication, the effect of the medication can not enter the vagina, and can not play a role in the treatment of vaginitis. This is because of the anatomical and physiological structure of the vagina. Although the vaginal opening is open to the outside world, at any time will be invaded by the outside world, but the front and back walls of the vagina are close to each other, “impermeable to liquid”. Do not say is in the soaking liquid, liquid simply can not penetrate into the vagina, even in swimming, diving, underwater water pressure is very high when the water can not be pressed into the vagina. If in the swimming, diving, water are inside into the vagina, then quickly full of water, which women dare to go swimming it! Therefore, the external washing of the drug is not allowed to enter the vagina, washing is also in vain. Improper use of external washing drugs, not only no therapeutic effect, but also cause vulvar skin allergies, itching occurs. This is why the more you wash the vulva, the more itchy it gets. If you have vulvar or vaginal itching, you must find a doctor to give you a clear examination of what is the cause, what germs caused, and then treat the symptoms, in order to cure. Blindly washing on your own with medication not only fails to achieve the effect of treatment or prevention of disease, but also gives pathogenic bacteria an opportunity to take advantage of.