Superficial form of cellulitis localised to dermis and lymphatic system

Aetiology

• Causative organism: Strep. pyrogenes

Clinical presentation

• Most commonly affects the face and is a spreading well demarcated, erythematous plaque
  • Can have 'butterfly' distribution over the cheeks and the bridge of the nose
  • If face affected, this source of infection is usually the nasopharynx (possibly recent nasopharyngeal infection)
• Also commonly affects the lower limbs
• Associated symptoms: fever and systemic upset

Investigations

• Usually clinical diagnosis
• Cultures from possible portals of entry may be indicated in some circumstances e.g. if patient is very unwell

Management

• Flucloxacillin: oral, IV if person is unable to take oral or is severely unwell