White solid discharge on underwear should be female leucorrhea. Leucorrhea is female vaginal discharge, which is a mixture of vaginal mucosal exudates, cervical canal and endometrial gland secretions. Its formation is related to the action of estrogen. Under normal circumstances, the quality and quantity of leucorrhea change with the menstrual cycle. After menstruation, the leucorrhea will be small in amount, white in color, and pasty. In the middle of menstruation, when the ovaries are about to ovulate, due to the strong secretion of cervical glands, leucorrhea increases, which is transparent, slightly sticky, and egg white-like. 2 to 3 days after ovulation, the leucorrhea becomes turbid, thick and thin. Before and after menstruation, due to pelvic congestion, vaginal mucosal exudates increase, and leucorrhea often increases.

Normal leucorrhea is white paste or egg white-like, sticky, no fishy smell, and small in amount. It is called physiological leucorrhea. Due to the action of the pelvic floor muscles, the female vaginal opening is closed and the front and back walls are in close contact. The moisture in leucorrhea keeps a woman's vagina in a moist state. This moist environment can reduce the friction between the front and back walls of the vagina and protect the vaginal walls from damage. At the same time, this moist state makes women's vagina lubricated and elastic, which is beneficial to improving the quality of sexual life.

When inflammation of the reproductive tract such as vaginitis and acute cervicitis or cancer occurs, the amount of leucorrhea increases significantly and its characteristics change, which is called pathological leucorrhea.

1. Cheese-like leucorrhea or tofu-like leucorrhea: it is fungal vaginitis, often accompanied by severe vulvar itching or burning pain.

2. Thin purulent, yellow-green, foamy, smelly leucorrhea, which is characteristic of trichomonal vaginitis, accompanied by vulvar itching.

3. Gray-white, thin, fishy-smelling leucorrhea is a characteristic of bacterial vaginosis, accompanied by mild itching of the vulva.

4. Purulent leucorrhea: yellow or yellow-green in color, sticky, often smelly, and is caused by bacterial infection. It can be seen in Neisseria gonorrhoeae vaginitis, acute cervicitis and endocervicitis, vaginal cancer or cervical cancer complicated by infection. Pyometra or foreign body residue in the vagina can also cause purulent leucorrhea.

6. Watery leucorrhea: Vaginal discharge that is as thin as water or rice juice and has a fishy smell. It is found in advanced cervical cancer, vaginal cancer or submucosal fibroids with infection. Intermittent discharge of clear, yellow-red or red watery leucorrhea should consider the possibility of fallopian tube cancer.

7. Bloody leucorrhea: There is blood mixed in the leucorrhea, and the amount of blood varies. Cervical cancer, endometrial cancer, cervical polyps, cervical columnar epithelial ectopic infection or uterine submucosal fibroids should be considered. wait. Inserting an intrauterine device can also cause bloody leucorrhea.