What Causes Yellow Vaginal Discharge?
Increased vaginal discharge (leukorrhea) refers to an increase in the volume of vaginal secretions in women. In some cases, increased leukorrhea is a normal physiological phenomenon. However, if increased leukorrhea is accompanied by other symptoms, it may signal the onset of gynecological disorders. Increased leukorrhea can be classified as either physiological or pathological. Pathological leukorrhea often reflects underlying disease through changes in its volume, color, consistency, and odor.

What Causes Yellowish Vaginal Discharge?
1. Cervical Inflammation
Yellowish vaginal discharge with an unpleasant odor—or appearing milky-white or purulent—is often accompanied by abdominal pain and is typically caused by chronic cervicitis or endocervicitis.
2. Amebic Infection
Yellowish discharge that is serosanguineous or mucoid—and occasionally contains small, necrotic, meat-like fragments (resembling yellowish soy sauce soup)—is commonly associated with infection by *Entamoeba histolytica*.
3. Trichomoniasis
Yellow-green or yellow, foul-smelling discharge—thin, frothy, or resembling rice-water, often grayish-white in color—is usually caused by *Trichomonas vaginalis*. Treatment options include systemic therapy (e.g., oral metronidazole or tinidazole tablets) and local vaginal therapy (e.g., vaginal insertion of metronidazole effervescent tablets or Biazole suppositories).
4. Fallopian Tube Carcinoma
In women with fallopian tube cancer, tumor-induced stimulation of tubal epithelium and tissue necrosis lead to intermittent, clear, yellowish-red vaginal discharge that flows out intermittently and persistently.
5. Wearing Tight-Fitting Pants
Many fashion-conscious women frequently wear tight-fitting pants. Prolonged use of tight nylon pants, however, may elevate perineal humidity and temperature, promoting fungal overgrowth and altering vaginal discharge—potentially resulting in yellowish leukorrhea.
6. Spleen-Stomach Deficiency Heat
Women with spleen-stomach deficiency heat are prone to yellowish vaginal discharge. Symptom relief may be achieved through herbal or dietary regulation targeting spleen and stomach function.
7. Bacterial Vaginosis
Discharge in bacterial vaginosis is typically yellow or yellowish-gray and relatively thin in consistency. Diagnosis can be confirmed via routine vaginal discharge examination.
The above outlines potential causes of yellowish vaginal discharge. We hope this information is helpful to you.