Vulvar Abscess Management

Primary Treatment: Incision and Drainage

Incision and drainage is the cornerstone of treatment for all vulvar abscesses and must be performed urgently to prevent progression to necrotizing fasciitis and systemic sepsis, as recommended by medical guidelines 1, 2
The American College of Obstetricians and Gynecologists implies that making the incision as close as possible to the affected area while ensuring complete drainage is crucial 1
Thoroughly evacuating all pus and probing the cavity to break up any loculations is essential, as inadequate drainage leads to recurrence rates up to 44% 1, 2
For large abscesses (>5 cm), using multiple counter-incisions rather than a single long incision can prevent step-off deformity and delayed healing 1, 2

The American College of Obstetricians and Gynecologists suggests that antibiotics are NOT routinely required after adequate surgical drainage in otherwise healthy patients with simple vulvar abscesses 1, 2
Antibiotics ARE indicated when systemic signs of infection are present, significant surrounding cellulitis is observed, incomplete source control or inadequate drainage occurs, or the patient has diabetes mellitus, immunosuppression, or other significant comorbidities 1, 2
For vulvar location specifically, using empiric broad-spectrum coverage for polymicrobial flora including MRSA is recommended 2
The first-line oral regimen for outpatient treatment is Clindamycin 300-450 mg PO every 6-8 hours PLUS trimethoprim-sulfamethoxazole (TMP-SMX) 1-2 double-strength tablets twice daily 2
The duration of antibiotic therapy is 7-10 days for simple cases and up to 7 days for immunocompromised patients 2

Wound packing after drainage remains controversial and may be painful without adding benefit, according to the American Journal of Obstetrics and Gynecology 3, 1
Simply covering with a dry dressing is usually effective 2

Routine imaging after drainage is not required 1
Patients with ongoing signs of infection beyond 7 days warrant diagnostic re-evaluation including repeat cultures and imaging 1, 2

Never treat with antibiotics alone without drainage, as this leads to treatment failure and progression to necrotizing infection 1, 2
Do not delay drainage while waiting for imaging or laboratory results, as clinical diagnosis is sufficient for typical presentations 1, 2
Ensure complete drainage of all loculations, as inadequate drainage is the primary cause of recurrence 1, 2