Management of Bullous Cellulitis
Antibiotic Selection for Immunocompetent Patients
When to Add MRSA Coverage
Special Populations Requiring Broader Empiric Therapy
Admission vs. Outpatient Management
Adjunctive Therapies
Treatment Duration and Monitoring
Diagnostic Testing
Recurrence Prevention
Admission and Management Guidelines for Lower Leg Cellulitis
Indications for Hospital Admission
- Hypotension or hemodynamic instability indicates severe systemic infection and requires intravenous antibiotic therapy. 2
- Immunosuppressed patients (severe cell‑mediated deficiency, neutropenia, malignancy) should be admitted for blood cultures and intravenous antibiotics. 2
Criteria for Outpatient Management
- Patients who lack systemic signs—normal vital signs, afebrile, and normal mental status—can be safely treated as outpatients with oral antibiotics. 2, 3
- Absence of immunosuppression or other severe comorbidities supports outpatient care. 2
- Ability to adhere to an oral regimen and attend follow‑up appointments is sufficient for outpatient management. 2
Antibiotic Stewardship
- Routine admission solely for intravenous antibiotics is unnecessary; oral agents are appropriate when high‑risk features are absent. 2
- Blood cultures should be obtained only in patients with systemic signs, immunosuppression, or atypical risk factors (e.g., animal bites, immersion injuries). 2
- Empiric MRSA coverage is generally not required; β‑lactam monotherapy cures ≈96 % of typical cellulitis cases, with MRSA agents reserved for penetrating trauma, intravenous drug use, or purulent drainage. 2, 3
Treatment Duration and Monitoring
- A minimum 5‑day antibiotic course is as effective as a 10‑day course when clinical improvement is evident by day 5. 2
- Elevating the affected limb accelerates improvement by promoting drainage. 3
- Admitted patients should demonstrate a clinical response within 24–48 hours; failure to improve warrants reassessment for complications or alternative diagnoses. 2