Phlegmon is a spreading diffuse inflammatory process with formation of suppurative/purulent exudate or pus. Commonly by bacteria - staphylococci, streptococci, pneumococci, spore and non-spore forming anaerobes, etc. Factors affecting the development of phlegmons are virulence of bacteria and human's immunity strength defenses. 1)By clinical course: a)acute b)subacute 2)By severity of condition: a)mild b)average c)severe 3)By location: I)Superficial a)cutaneous b)subcutaneous c)interstitial tissue d)intramuscular II)Deep e)mediastinal f)retroperitoneal 4)By etiology: a)single b)mix 5)By...