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an ulcerative pyoderm usually caused by group A beta-hemolytic streptococcal infection at the site of minor trauma, predominantly involving the shins and feet, and generally healing with variable scar formation.
ecthyma gangreno´sum a condition most often seen in debilitated patients in association with septicemia caused by gram-negative organisms, characterized by lesions that begin as vesicles that rapidly progress to pustulation and gangrenous ulcers with undermined purpuric edges.
der·ma·ti·tis gan·gre·no·sa in·fan·tum
a bullous or pustular eruption, of uncertain origin, followed by necrotic ulcers or extensive gangrene in children under 2 years of age; if untreated, death may result from hematogenous infection, such as liver abscess.
ecthyma gangrenosumAbbreviation: EG
Ecthyma in patients with Pseudomonas aeruginosa, bacteremia, or sepsis. The disease consists of pustules, localized skin infarcts, or necrotic ulcers surrounded by inflamed, reddened skin. It can be diagnosed by culturing the lesions.
See also: ecthyma