Pityriasis rosea: An important papulosquamous disorder

Abstract

International Journal of Dermatology 2005, 44 , 757-764 757 Pityriasis rosea (PR) is a mild, self-limited skin disease of unknown etiology. Viral and bacterial causes have been considered as possible causes. Pityriasis rosea typically affects children and young adults. It is characterized by an initial herald patch, followed by the development of salmon-pink scaly macules which, when localized to the trunk, form alongLanger's lines of cleavage. Pityriasis rosea may be difficult to diagnose until the appearance of these characteristic smaller secondary lesions. Several medications can cause a rash similar to PR. Pityriasis rosea must be distinguished from several diseases, including secondary syphilis. The treatment of PR is usually symptomatic. 758Education Pityriasis rosea González et al.

A Randomized, Double-blind, Placebo-Controlled Study of Efficacy of Oral Acyclovir in the Treatment of Pityriasis Rosea

“…A chance observation of improvement of skin lesions of pityriasis rosea in two patients who were given erythromycin for upper respiratory tract infections, also confirms this hypothesis [9]. It has already been established that drugs like allopurinol, arsenic, bismuth, barbiturate, gold, hydrochlorothiazide, organic mercurials, nimesulide, d-penicillamine, clonidine, isotretinoin and ketotifen can cause eruptions resembling pityriasis rosea [10][11][12]. Ampicillin and systemic corticosteroids have been found to exacerbate PR [11].…”

Pitiriasis rosada: un exantema que debe ser reconocido por el médico de primer contacto. Estudio de 30 casos

“…Ambos géneros se ven afectados en proporciones similares 3 con ligero predominio del femenino. 4 Se ha reportado una frecuencia de 2% en la consulta dermatológica. 5 La incidencia en lactantes menores de dos años se ha reportado entre 0.1 y 0.3%, 6 mientras que en pacientes escolares menores de 10 años se presenta entre 6 y 10.5%.…”

“…La forma clásica o típica se observa en la mayoría de los casos (hasta en 94%). 4,11 Las lesiones se localizan en tronco (Figura 1) y en el tercio superior de las extremidades; la forma atípica no se presenta en el tronco y predomina en las extremidades (Figura 2), por lo que se le ha denominado invertida.…”

“…En las lesiones menos recientes se encuentran eosinófilos. 4,7 El medallón heráldico presenta hallazgos similares y un infiltrado perivascular superficial y profundo, menos espongiosis y más hiperplasia epidérmica.…”

Pityriasis Rosea Mimicking Polymorphic Eruptions of Pregnancy

“…It is usually self-limiting and disappears after 4 weeks. Pharmacological treatment includes topical as well as oral steroids, antibiotics such as macrolides and antihistamines to control itching [1,2]. It is very rare in pregnancy, and only a few cases and studies have been done reporting the association of pregnancy with Pityriasis Rosea.…”