Skin abcesses are often caused by trauma including fighting. ''Staphylococcus aureus, Streptococcus spp., Pasturella pneumotropica'' and ''Actinomyces aureus'' have been isolated from skin abcesses. | Skin abcesses are often caused by trauma including fighting. ''Staphylococcus aureus, Streptococcus spp., Pasturella pneumotropica'' and ''Actinomyces aureus'' have been isolated from skin abcesses. |