impetigo

(im-pe-ti'go) [L. impetere, to attack.] eruption of pustules, which soon rupture or become crusted, occurring chiefly on the face around the mouth and nostrils, caused by infection with pus microorganisms; it is variously qualified as simplex, contagiosa, vulgar is, sireptogenes, staphylogenes, or, according to the shape of the patches caused by grouping of the lesions, circinata, gyrata, or figurata. Bock'hart's i., a form involving chiefly the hair-follicles, i. bullo'sa. i. with lesions of large size, forming bulls, i. contagio'sa, an eruption of flattish vesicles becoming pustules, contagious in character, i. contagio'sa bullo'sa, Corlett's* pyosis. eczema to'des, eczema pustulosum. i. her pet i for'mis,' an eruption of small, closely aggregated pustules, developing upon an inflammatory base, accompanied by severe general symptoms, and terminating fatally as a rule. i. prima'rum via'rum, sprue (2). i. syphilit'ica, a. pustular syphilide. i. variolo'sa, a pustular eruption sometimes seen late in the course of the smallpox exanthem.