Antimicrobial therapy for skin infections

Area of Science:

• Dermatology
• Infectious Diseases
• Microbiology

Background:

• Common skin infections are frequently caused by Staphylococcus aureus, group A streptococci (Streptococcus pyogenes), or the skin's normal flora.
• Effective treatment strategies vary significantly based on the specific type of skin infection.
• Understanding the causative agents is crucial for appropriate therapeutic interventions.

Purpose of the Study:

• To outline the preferred treatment modalities for common bacterial skin infections.
• To differentiate between conditions requiring antimicrobial therapy and those managed by drainage.
• To clarify the role of systemic antibiotics in specific dermatological conditions like impetigo and cellulitis.

Main Methods:

• Review of established clinical guidelines and literature on bacterial skin infections.
• Analysis of treatment approaches for impetigo, cellulitis, furuncles, carbuncles, cutaneous abscesses, and inflamed epidermal cysts.
• Evaluation of the necessity of antimicrobial therapy in non-infected or minimally infected conditions such as venous ulcers and atopic eczema.

Main Results:

• Antistaphylococcal oral antibiotics are recommended for nonbullous and bullous impetigo.
• Broad-spectrum oral antibiotics effective against both S. aureus and streptococci are suitable for most cellulitis cases.
• Incision and drainage are the primary treatments for furuncles, carbuncles, cutaneous abscesses, and inflamed epidermal cysts, often negating the need for antibiotics.
• Systemic antimicrobial therapy offers no benefit for patients with venous ulcers and atopic eczema unless clear signs of infection (fever, cellulitis, lymphangitis) are present.

Conclusions:

• Treatment for bacterial skin infections should be tailored to the specific diagnosis and causative organism.
• Incision and drainage are paramount for purulent skin infections, with antibiotics reserved for specific indications.
• Systemic antibiotics are not routinely beneficial for non-infected chronic skin conditions like eczema or ulcers.