Anaphylactoid purpura.
D000293:Adolescent; D000367:Age Factors; D002648:Child; D002675:Child, Preschool; D005260:Female; D005767:Gastrointestinal Diseases / Q000209:etiology; D006801:Humans; D006967:Hypersensitivity; D007223:Infant; D007231:Infant, Newborn; D007592:Joint Diseases / Q000209:etiology; D008297:Male; D009393:Nephritis / Q000209:etiology; D011693:Purpura / Q000150:complications / Q000453:epidemiology / Q000209:etiology; D012621:Seasons; D012737:Sex Factors; D013290:Streptococcal Infections / Q000150:complications