Cellulitis

• Deeper than impetigo
• Infection of deep dermis and subcutaneous tissue
• Etiology
  • Staph aureus -> purulent cellulitis
  • Strep pyogenes -> nonpurulent cellulitis
• Primary – entry through minor skin injury
• Secondary – to systemic infection
• Clinical features
  • Erythematous lesion with poorly defined margins
  • Purulent cellulitis -> purulent exudate
• Treatment
  • Cloxacillin