What is black mucus flowing from the lower body?

It is not normal for women to have black liquid discharge from their lower body. This means that women are likely to have vaginitis or other similar gynecological diseases, and the probability of developing vaginitis is also the highest. There are five main types of vaginitis, namely: bacterial vaginosis, candidal vaginitis, trichomoniasis vaginitis, senile vaginitis and juvenile vaginitis. If these diseases occur, they must be treated promptly, otherwise they will affect your health and fertility.

1. Why do women have black secretions in their private parts?

Black discharge from a woman's vagina is a sign of vaginitis. Because women have different physical constitutions and different types of vaginitis, the symptoms they experience will also be different. Some women do not feel pain or itching, which is very common. However, vaginitis without symptoms is something you must be vigilant about, because people often ignore it because there are no symptoms, which can lead to serious consequences! If vaginitis is not treated in time, it may lead to genital organ lesions and affect fertility.

2. Classification and causes of vaginitis

1. Bacterial vaginosis

In a normal vagina, lactobacilli that produce hydrogen peroxide are dominant. Bacterial vaginosis is an endogenous mixed infection caused by a decrease in Lactobacillus and an increase in Gardnerella and anaerobic bacteria in the vagina.

2. Candidal vaginitis

(1) 80% to 90% of pathogens are Candida albicans, which grow easily in an acidic environment and are diphasic bacteria (yeast phase and hyphae phase).

(2) The patient's vaginal pH is 4.0-4.7, usually <4.5.

(3) Conditionally pathogenic bacteria (yeast phase → mycelium phase).

(4) Common causes: pregnancy, diabetes, and large-scale use of immunosuppressants and broad-spectrum antibiotics.

(5) Other contributing factors: gastrointestinal Candida, wearing tight synthetic underwear, and obesity.

3. Trichomonas vaginitis

(1) Trichomonas vaginalis grows best in a humid environment with a temperature of 25℃ to 40℃ and a pH of 5.2 to 6.6.

(2) The vaginal pH changes before and after menstruation, becoming close to neutral after menstruation, making it easier for Trichomonas to reproduce.

(3) The patient's vaginal pH is generally between 5.0 and 6.5, with most cases being > 6.0.

(4) Parasitic on the vagina, urethra or paraurethral glands, bladder, renal pelvis, male foreskin folds, urethra, and prostate.

(5) Often coexists with other vaginitis.

4. Senile vaginitis

Postmenopausal women have declining ovarian function, lower estrogen levels, vaginal wall atrophy, thinning mucosa, increased vaginal pH, reduced local resistance, and other pathogenic bacteria may over-multiply or easily invade and cause inflammation, mainly aerobic bacteria.

5. Vaginitis in young girls

It is caused by poor development of the vulva, low estrogen levels and foreign objects in the vagina of infants and young children, which trigger infection. Common pathogens include Escherichia coli, Staphylococcus aureus, Streptococcus aureus, etc.