Classification characteristic | Most common disease (underline) Incidence (%) |
---|---|
Anatomic localization | Fournier's gangrene of perineum and scrotum |
Depth of infection | Necrotizing adiposities |
fasciitis, myonecrosis | |
Microbial cause | Type I: polymicrobial/synergistic/70-80% of cases |
Type II: monomicrobial (Staphylococcus, Streptococcus, Clostridia spp)/20% of cases | |
Type III: marine related organisms | |
Type IV: fungal | |
Severity of infection | |
Uncomplicated infections | Superficial: impetigo, ecthyma |
Deeper: erysipelas, cellulitis | |
Hair follicle associated: folliculitis, furunculosis | |
Abscess: carbuncle, other cutaneous abscesses | |
Complicated infections | Secondary skin infections |
Acute wound infection (traumatic, bite related, postoperative) | |
Chronic wound infections (diabetic wound infection, venous stasis ulcers, pressure sores) | |
Perineal cellulitis with/without abscess | |
Necrotizing fasciitis | |
Polymicrobial fasciitis (Type I) | Fournier's gangrene, synergistic necrotizing cellulitis with fasciitis and myositis |
Streptococcal gangrene | |
Monomicrobial fasciitis (Type II) | Marine-related organisms-Vibrio vulneriformis and other Vibrio spp |
Fungal spp | |
Myonecrosis | |
Crepitant myonecrosis | Clostridial myonecrosis (traumatic gas gangrene and atraumatic gas gangrene-Clostridium perfrigens and other Clostridial spp) |
Synergistic necrotizing cellulitis with fasciitis and myositis | |
Non-crepitant myonecrosis | Streptococcal gangrene with myonecrosis-Aeromonas hydrophila myonecrosis |