What is necrotizing fasciitis and how is it treated?
Answer: Very serious subcutaneous infection that spreads rapidly along fascial plane typically after trauma of the skin. Can be either polymicrobial or monomi-crobial (classically S. pyogenes). Treat with aggressive surgical debridement (including amputation) and antibiotics active against the likely pathogens. (If group A Streptococcus, use penicillin and clindamycin.)