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Table 1 Eron classification system for patients with skin and soft tissue infection[16]

From: Oral flucloxacillin and phenoxymethylpenicillin versus flucloxacillin alone for the emergency department outpatient treatment of cellulitis: study protocol for a randomised controlled trial

Class Patient criteria
1 Afebrile and healthy, other than cellulitis
2 Febrile and ill appearing, but no unstable comorbidities, or systemically well with comorbidity (PVD, CVI, morbid obesity)
3 Toxic appearance, or at least one unstable comorbidity, or a limb-threatening infection
4 Sepsis syndrome or life-threatening infection, for example, necrotizing fasciitis
  1. CVI chronic venous insufficiency, PVD peripheral vascular disease.