Ecthyma
Definition
Ecthyma is a skin infection similar to impetigo. It is often called "deep impetigo" because it occurs deep inside the skin.
Causes
Ecthyma is most often caused by the bacteria streptococcus. Sometimes, staphylococcus bacteria causes this skin infection.
The infection may start in skin that has been injured due to a scratch or insect bite. It often develops on the legs.
The infection may first appear with a pus-filled blister, similar to that seen in persons with impetigo. However, the infection spreads much deeper into the skin.
References
Habif TP. Clinical Dermatology. 4th ed. St. Louis, Mo: Mosby; 2004.
Mandell GL, Bennett JE, Dolin R. Principles and Practice of Infectious Diseases. 6th ed. London: Churchill Livingstone; 2005.
Rakel RE. Textbook of Family Practice. 6th ed. Philadelphia, Pa: WB Saunders; 2002.
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