You are correct. Worsening pain, purplish red skin discoloration, reddish blue bullae w/ serohemorrhagic fluid, tissue crepitation (indicating tissue gas), & s/sx of systemic toxicity strongly suggest a necrotizing soft tissue infxn & exclude conditions such as venous thrombosis, autoimmune skin dz, & uncomplicated cellulitis. The pt underwent urgent surgical exploration that revealed muscle necrosis. Cx was positive for Clostridium septicum. Spontaneous forms of clostridial myonecrosis are extremely rare but can manifest in pts w/ malignancy, immunosuppression, &/or DM. These forms can have a fulminant evolution & must be evaluated w/in hrs to increase chances of survival. After an initial improvement following surgery, this pt later died of multiple organ failure.