Infectious Disease Compendium

Ecthyma Gangenosum

Diagnosis

Central black necrosis with red, tender surrounding skin. It is due to infection lodging in the capillaries and causing infection, thrombosis and infarction.

Epidemiologic Risks

Usually neutropenia.

Microbiology

Pseudomonas leads the list, but other bacteria, yeasts and moulds can cause it.

Empiric Therapy

Depends on the organism.

Pearls

If you see it, biopsy for culture and gram stain. Right away.

Rants

ICD9 Codes (Soon to be supplanted by ICD10)

Ecthyma 686.8 gangrenosum 686.09.