Differential Diagnosis for Greenish-Yellow Vaginal Discharge
Single Most Likely Diagnosis
- Bacterial Vaginosis (BV): This condition is characterized by an imbalance in the normal vaginal flora, leading to an overgrowth of bacteria. It is the most common cause of abnormal vaginal discharge in women of reproductive age, often presenting with a thin, greenish-yellow, homogeneous discharge with a fishy odor.
Other Likely Diagnoses
- Trichomoniasis: Caused by the protozoan parasite Trichomonas vaginalis, this sexually transmitted infection can lead to a greenish-yellow, frothy vaginal discharge. It is accompanied by other symptoms such as itching, burning, and irritation of the genital area.
- Gonococcal Infection: Neisseria gonorrhoeae can cause a greenish-yellow vaginal discharge, especially if the infection involves the cervix. This discharge may be accompanied by symptoms like dysuria, increased urinary frequency, and pelvic pain.
- Chlamydial Infection: Similar to gonococcal infections, Chlamydia trachomatis can cause cervicitis leading to a greenish-yellow discharge, often with other symptoms such as abdominal pain, dyspareunia, and irregular menstrual bleeding.
Do Not Miss Diagnoses
- Pelvic Inflammatory Disease (PID): While PID itself may not directly cause a greenish-yellow discharge, it is a serious complication of untreated sexually transmitted infections (like gonorrhea and chlamydia) that can lead to severe consequences, including infertility and chronic pelvic pain. The discharge associated with PID can vary but may appear purulent or discolored.
- Cervical Cancer: Although less common, advanced cervical cancer can cause abnormal vaginal bleeding or discharge, which may appear greenish-yellow due to infection or necrosis of the tumor. Early detection is crucial for effective treatment.
Rare Diagnoses
- Foreign Body: The presence of a foreign body in the vagina, especially in children, can lead to a foul-smelling, greenish-yellow discharge due to secondary infection. This condition requires prompt removal of the object to prevent further complications.
- Vaginal Tumors: Benign or malignant tumors of the vagina can cause abnormal vaginal discharge, which may be greenish-yellow if there is associated infection or necrosis. These are rare and usually present with other symptoms such as abnormal vaginal bleeding.