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.
Gangrene: Types list. The list of types of Gangrene mentioned in various sources includes: 1  Dry gangrene-caused by poor blood supply. 2  Moist gangrene-caused by caused by bacteria. 3  Gas gangrene-caused by a particular strain of Clostridium bacteria.