A contagious superficial pyoderma, caused by Staphylococcus aureus and/or group A streptococci, which begins with a superficial flaccid vesicle that ruptures and forms a yellowish crust; most commonly occurs in children.
[L. a scabby eruption, fr. im-peto (inp-), to rush on, attack]
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Examples: glitazone, GI cocktail, etc.