Nor does the DSM-5 place any arbitrary time limit on ordinary grief, in the context of bereavement â another issue widely misrepresented in the general media, and even by some clinicians.
Gas gangrene is commonly caused by infection with the bacterium Clostridium perfringens, which develops in an injury or surgical wound that's depleted of blood supply. The bacterial infection produces toxins that release gas â hence the name gas gangrene â and cause tissue death.
1 Dry gangrene is caused by chronic illness, while wet gangrene - including gas gangrene - is usually an acute form involving bacterial infection and caused by injury, for example.  Wet gangrene can result from chronic disease if the dry gangrene becomes infected.