Papular urticaria.
Papular urticaria is a common and often distressing childhood disorder manifested by chronic or recurrent papules caused by a hypersensitivity reaction to the bites of mosquitoes, fleas, bedbugs, and other insects. Individual papules may surround a wheal and often have a central punctum. The histopathology of papular urticaria consists of mild subepidermal edema, extravasation of erythrocytes, interstitial eosinophils, and exocytosis of lymphocytes. Papular urticaria may represent a clinical challenge, particularly during spring and summer months.
Stibich
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New Jersey Medical School, Newark 07103-2714, USA.
Schwartz
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D017677:Age Distribution; D002648:Child; D002675:Child, Preschool; D005260:Female; D006801:Humans; D006967:Hypersensitivity / Q000175:diagnosis / Q000453:epidemiology / Q000628:therapy; D015994:Incidence; D008297:Male; D011379:Prognosis; D012307:Risk Factors; D012621:Seasons; D012872:Skin Diseases, Vesiculobullous / Q000175:diagnosis* / Q000453:epidemiology / Q000628:therapy; D014581:Urticaria / Q000175:diagnosis* / Q000453:epidemiology / Q000276:immunology* / Q000628:therapy