What Causes Yellow Vaginal Discharge?
Abnormal vaginal discharge (leukorrhea) in women is a common occurrence in daily life. Such abnormalities often reflect underlying gynecological conditions. In fact, most women today experience some form of gynecological disorder, and abnormal vaginal discharge is frequently the most prominent symptom. For instance, yellowish vaginal discharge warrants attention, as it may indicate vaginitis or cervicitis. So, what causes yellow vaginal discharge? Below, we address this question.

What Causes Yellow Vaginal Discharge?
1. Necrosis of Diseased Tissue
Yellowish, watery vaginal discharge is commonly associated with necrosis of diseased tissue and is frequently observed in conditions such as submucosal uterine fibroids, cervical cancer, and fallopian tube cancer.
2. Candida (Yeast) Vaginitis
Candida vaginitis is one of the most common types of vaginitis, typically caused by infection with Candida albicans. It is especially prevalent among pregnant women and individuals with diabetes mellitus. Prolonged use of broad-spectrum antibiotics can disrupt the normal vaginal flora, leading to yellowish discharge. Additionally, young women who wear tight nylon pants may experience increased perineal humidity and temperature—conditions favorable for candidal growth and proliferation.
3. Trichomonas Vaginitis
Trichomonas vaginitis is the most common form of infectious vaginitis, caused by the anaerobic protozoan Trichomonas vaginalis. This organism commonly resides in the genitourinary tract; in women, it primarily inhabits the vagina but may also be found in the urethra, paraurethral glands, and bladder. In men, it typically colonizes the urethra and prostate. Characteristic discharge is yellow-green, frothy, thin, and foul-smelling. When the infection involves the urethra, symptoms such as urinary urgency and frequency may occur.
4. Atrophic (Senile) Vaginitis
Atrophic vaginitis predominantly affects postmenopausal women. A hallmark symptom is increased vaginal discharge, often accompanied by lower abdominal and vaginal pressure or heaviness, as well as a burning sensation in the vagina. The typical discharge is pale yellow, watery or purulent, malodorous, and may contain small amounts of blood.
The above outlines the primary causes of yellow vaginal discharge. We hope this information is helpful to you.