Treatment of Superficial Wound Skin Infections

Types of Superficial Wound Infections and Their Management

The primary treatment for superficial wound skin infections depends on the type of infection, with antibiotics against Gram-positive bacteria for spreading infections like impetigo, erysipelas, and cellulitis, and incision and drainage for well-circumscribed abscesses or boils 1, 2
Spreading infections present with erythema, tenderness, and induration and are primarily caused by Gram-positive bacteria, particularly streptococci and S. aureus 1, 2
Treatment for mild-to-moderate infections in patients without recent antibiotic exposure should include therapy aimed solely at aerobic gram-positive cocci 3
Consider empiric therapy for community-acquired MRSA (CA-MRSA) for patients at risk or who don't respond to first-line therapy 1, 2

Incision and drainage is the cornerstone of treatment for simple abscesses or boils, with complete evacuation of all purulent material essential 1, 2, 4
After drainage, wounds should be left open to heal by secondary intention with regular dressing changes 4
Antibiotics are generally unnecessary for uncomplicated abscesses after adequate drainage 1, 2, 4

For spreading infections, antibiotics targeting Gram-positive bacteria should be used 1, 2
Highly bioavailable oral antibiotics can be used for most mild and many moderate infections 3
Parenteral therapy is required for virtually all severe and some moderate infections, at least initially 3
The duration of therapy for mild infections is usually 1-2 weeks, but some require an additional 1-2 weeks 3
For moderate and severe infections, the duration of therapy is usually 2-4 weeks depending on structures involved, adequacy of debridement, and wound vascularity 3

Proper wound cleansing, debridement of any callus and necrotic tissue, and off-loading of pressure are crucial for healing 3
For abscesses after drainage, irrigate the wound cavity to remove debris and residual purulent material, apply a clean, sterile dressing, and perform daily dressing changes 4

For diabetic foot infections, select empirical antibiotic regimen based on infection severity and likely pathogens, provide optimal wound care, and consider early surgical consultation for deep abscess, extensive bone/joint involvement, or substantial necrosis/gangrene 3
For animal bites, use antimicrobial agents active against both aerobic and anaerobic bacteria, such as amoxicillin-clavulanate, and primary wound closure is generally not recommended except for facial wounds 6

Routine follow-up within 48-72 hours to assess wound healing, and patients should return sooner if they develop increasing pain, swelling, redness, fever, systemic symptoms, or if symptoms fail to improve within 48 hours 4