[Gangrenous ecthyma of the diaper area in infants].

Ecthyma gangrenosum due to Pseudomonas aeruginosa is a skin infection in which necrotic ulcerations surrounded by a red areola develop. The diaper area is the region most often involved in infants. Typically, ecthyma gangrenosum occurs in patients with septicemia and risk factors (chemotherapy, neutropenia). However, transient bacteremia or an infection confined to the skin may be the cause in some patients, with maceration in the diaper area and previous antibiotic therapy as risk factors.