Vaginal discharge
Vaginal discharge is the biological fluid secreted from the vagina. While most discharge is normal and can reflect the various stages of the menstrual cycle, some discharge can be a result of an infection.
Nonpathological
Nonpathological vaginal discharge ranges in pH from 3.8 to 4.2 and is typically white or clear in color, though it can be yellowish. Nothing is visible under a microscope in a vaginal wet mount and treatment with KOH does not give off an odor, which could indicate pathology. It is produced by cervical and vaginal glands.
Menstrual cycle
Vaginal discharge amounts vary as the menstrual cycle progresses. Ovulation can increase discharge. Menopause or low estrogen levels can cause a decrease in discharge.
Neonatal
In neonates, vaginal discharge sometimes occurs in the first few days after birth. This is due to exposure to estrogen while in utero. Neonatal vaginal discharge may be white or clear with a mucous texture, or it may be bloody from normal transient shedding of the endometrium.