Infectious Disease Compendium

Ecthyma Gangenosum


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

Epidemiologic Risks

Usually neutropenia.


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

Empiric Therapy

Depends on the organism.


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

Last Update: 06/25/18.