Pelvic Inflammatory Disease (PID) is an ascending infection of the upper female genital tract, involving the endometrium, fallopian tubes, ovaries, and adjacent pelvic structures. It remains a significant contributor to reproductive morbidity, particularly in low-resource and underserved settings.
Etiology and Pathophysiology
PID is most commonly associated with sexually transmitted pathogens, particularly Chlamydia trachomatis and Neisseria gonorrhoeae. However, it is often polymicrobial, involving anaerobes, facultative bacteria, and genital tract flora.
The infection typically ascends from the lower genital tract, leading to:
1. Endometritis
2. Salpingitis
3. Tubo-ovarian abscess (in severe cases)
Chronic inflammation can result in fibrosis, tubal scarring, and adhesions, increasing the risk of infertility and ectopic pregnancy.
Clinical Presentation
The clinical spectrum of PID ranges from subclinical infection to severe disease. Common presenting features include:
1. Bilateral lower abdominal or pelvic pain
2. Cervical motion tenderness
3. Adnexal tenderness
4. Abnormal vaginal or cervical discharge
5. Intermenstrual or postcoital bleeding
5. Fever (>38°C) in moderate to severe cases
Subclinical PID is common and contributes significantly to long-term sequelae.
Diagnostic Evaluation
PID is primarily a clinical diagnosis supported by laboratory and imaging findings.
Minimum Clinical Criteria (CDC Guidelines):
1. Uterine tenderness
2. Adnexal tenderness
3. Cervical motion tenderness
Additional Supportive Findings:
1. Elevated ESR or CRP
2. Positive tests for N. gonorrhoeae or C. trachomatis
3. Leukocytosis
4. Transvaginal ultrasound (e.g., tubo-ovarian complex)
5. Laparoscopy (gold standard, though not routinely used)
Early empirical treatment is recommended to prevent complications.
Management
Antibiotic Therapy
Treatment should be broad-spectrum to cover likely pathogens:
1. Outpatient Regimen (example): Ceftriaxone + Doxycycline ± Metronidazole
2. Inpatient Management (indications include severe illness, pregnancy, or abscess): Parenteral antibiotics with close monitoring
Supportive Care
1. Analgesics
2. Hydration
3. Counseling and follow-up
Partner Management
All recent sexual partners should be evaluated and treated to prevent reinfection.
Complications
Untreated or recurrent PID can lead to:
1. Tubal factor infertility
2. Ectopic pregnancy
3. Chronic pelvic pain
4. Tubo-ovarian abscess
5. Perihepatitis (Fitz-Hugh–Curtis syndrome)
Prevention Strategies
1. Early detection and treatment of STIs
2. Routine screening in high-risk populations
3. Promotion of barrier contraception
4. Safe abortion and delivery practices
4. Community-based reproductive health education
Public Health Perspective
PID remains underdiagnosed, especially in rural and low-resource settings. Strengthening primary healthcare systems, integrating STI screening, and promoting awareness are critical to reducing disease burden.
Conclusion
Pelvic Inflammatory Disease is a clinically significant condition with serious reproductive consequences. Timely diagnosis, appropriate antimicrobial therapy, and preventive strategies are essential to reduce morbidity and improve women’s reproductive health outcomes.
