In May 2006, Coren was bitten by an insect that gave him septicaemia which led to his developing necrotising fasciitis.
The practice of "skin-popping" or subcutaneous injection predisposes to necrotizing fasciitis or necrotizing cellulitis from Clostridium perfringens, while deep intramuscular injection predisposes to necrotizing myositis.
Caption = Necrotic tissue from the left leg is being surgically debrided in a patient with necrotizing fasciitis.