Management of Infected Sebaceous Cysts

Indications for Antibiotics

The Infectious Diseases Society of America guidelines state that antibiotics are unnecessary for patients with minimal surrounding invasive infection and minimal systemic signs, with high cure rates (85-90%) achievable through drainage alone 1, 2, 3
Antibiotics are indicated in cases with systemic signs of infection, such as temperature ≥38.5°C or pulse rate ≥100 beats/min, with a short course of 24-48 hours potentially sufficient 1, 2
Extensive surrounding cellulitis (>5 cm of erythema and induration) is an indication for antibiotic therapy 1, 2, 4
Immunocompromised patients, including those with HIV, neutropenia, or transplant recipients, require antibiotic treatment 2, 5, 6, 7

For empirical coverage of skin and soft tissue infections, consider using TMP-SMX, doxycycline or minocycline, clindamycin, or cephalexin, with a typical duration of 7-14 days based on clinical response 3

Routine cultures of drained pus are usually unnecessary unless there are risk factors for multidrug-resistant organisms, recurrent infections, or the patient is high-risk 4, 5, 6, 7
Overuse of antibiotics contributes to antimicrobial resistance and should be avoided, with the most effective treatment remaining thorough evacuation of pus and probing the cavity to break up loculations 4