Vaginal discharge is fluid produced by the glands of the cervix and vaginal walls that exits through the vagina. It is a normal physiologic secretion that helps:
Cleanse and lubricate the vaginal canal
Maintain a healthy vaginal pH
Protect against infection by supporting normal flora (especially Lactobacillus species)
Normal discharge:
Is clear to white
May be thin, thick, or stretchy depending on the menstrual cycle
Has little or no odor
Varies with hormonal changes (ovulation, pregnancy, oral contraceptives)
For example, around ovulation it may be clear and stretchy (“egg-white” consistency).
Discharge is considered abnormal when it is associated with:
Foul odor
Yellow, green, or gray color
Thick, curd-like consistency
Itching, burning, irritation
Pelvic pain or fever
Common causes include:
Bacterial vaginosis
Vulvovaginal candidiasis
Trichomoniasis
Sexually transmitted infections (e.g., chlamydia, gonorrhea)
If you'd like, I can also provide a clinical definition suitable for board exams or a patient-friendly explanation.