Pronunciation: he'nok shern'lin
Definition: an eruption of nonthrombocytopenic, palpable purpuric lesions due to dermal leukocytoclastic vasculitis with IgA in vessel walls associated with joint pain and swelling, colic, and passage of bloody stools, and occurring characteristically in young children; glomerulonephritis may occur during an initial episode or develop later.
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Examples: glitazone, GI cocktail, etc.