Generalities:

They refer to the continuous degeneration of tissues, organs or systems due to chronic diseases. Within this classification we have several complex diseases such as diabetes, cancer, arthritis and others such as:

Gangrene, which consists in the death of organic tissues caused by lack of blood supply due to diabetes, cardiovascular problems, accidents or pathogens such as: clostridium malignum, clostridium Perfringens.

Gas gangrene  occurs in the skin, when it suffers some wound that allows the infection by clostridium. The progress of the infection is very fast desintegration of the tissues: the skin falls to pieces and expels an unpleasant smell.