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Vol. 100. Issue 8.
Pages 706-709 (October 2009)
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Vol. 100. Issue 8.
Pages 706-709 (October 2009)
Case reports
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Acute Postinfectious Pityriasis Rubra Pilaris: A Superantigenmediated Dermatosis
Pitiriasis Rubra Pilaris Aguda Postinfecciosa: Una Dermatosis Mediada por Superantígenos
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7981
C. Ferrándiz-Pulido
Corresponding author
40879cfp@comb.es

Correspondence: Hospital Vall d’Hebron, Paseo Vall d’Hebron, 119-129, 08035 Barcelona, Spain.
, R. Bartralot, P. Bassas, D. Bodet, T. Repiso, G. Aparicio, J. Mollet, M. Serra, V. García-Patos
Servicio de Dermatología, Hospital Vall d’Hebron, Universidad Autónoma de Barcelona, Barcelona, Spain
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Article information
Abstract

Acute postinfectious pityriasis rubra pilaris (PRP) is a variant of juvenile PRP (Griffiths type III) characterized by no family history, an acute course associated with a prior fever, and good prognosis. Clinical features may resemble other superantigen-mediated diseases, such as scarlatiniform rash or staphylococcal scalded skin syndrome, but its histology and treatment are different. We present 4 cases of acute postinfectious PRP that illustrate the clinical features of this uncommon disease and we review possible underlying pathogenic mechanisms.

Key words:
pityriasis rubra pilaris
erythroderma
infection
childhood
juvenile
superantigens
Resumen

La pitiriasis rubra pilaris (PRP) aguda postinfecciosa es una variante de la forma juvenil de PRP (tipo III de Griffiths) caracterizada por la ausencia de antecedentes familiares, curso agudo relacionado con un episodio febril previo y buen pronóstico. Clínicamente puede simular otras enfermedades mediadas por superantígenos, como los exantemas escarlatiniformes o el síndrome de la escaldadura estafilocócica; sin embargo, su histología y tratamiento son distintos. Presentamos 4 casos de PRP aguda postinfecciosa que ilustran las características clínicas de este proceso infrecuente y revisamos los posibles mecanismos fisiopatogénicos subyacentes.

Palabras clave:
pitiriasis rubra pilaris
eritrodermia
infección
infantil
juvenil
superantígenos
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Copyright © 2009. Academia Española de Dermatología y Venereología and Elsevier España, S.L.
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