A common bacterial skin infection affecting the deeper layers of skin and subcutaneous tissue. Usually caused by Streptococcus or Staphylococcus bacteria entering through breaks in the skin. Can spread rapidly and become life-threatening if not treated promptly.

• 1Physical examination
• 2Blood cultures (if fever present)
• 3Wound culture (if drainage present)
• 4Complete blood count (CBC)
• 5Erythrocyte sedimentation rate (ESR)
• 6C-reactive protein (CRP)
• 7Imaging (ultrasound, CT, MRI) if deep infection suspected

Good with prompt antibiotic treatment. Most cases resolve within 7-10 days. Recurrence common (20-30%). Potential complications include abscess formation, sepsis, necrotizing fasciitis, and chronic lymphedema. Hospitalization required for 15-20% of cases. Mortality low (<1%) with treatment.

• Prompt treatment of skin injuries
• Moisturize dry skin
• Treat underlying skin conditions
• Control diabetes
• Maintain healthy weight
• Compression stockings (if venous insufficiency)
• Proper wound care
• Avoid scratching insect bites
• Regular nail care
• Prophylactic antibiotics for frequent recurrences