Pityriasis Rosea

Neha Bansal
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Pityriasis Rosea - Introduction
Definition: It is a common acute exanthematous skin disorder with unknown etiology. (1)

Age groups affected: Mostly occurs in children and young adults peaking at 20-29 years of age. (1) The male to female ratio is 1:1.43 (2)

Etiology: Due to its similarity to the various viral exanthemas, an infective viral etiology has been assumed due to the fact that outbreaks occur in clusters, presence of a prodromal phase and suggestions of long lasting immunity to the infection. (1,3) However, there is no evidence to linking it to any particular etiological agent. There have been various controversial reports of association with HHV-6 and HHV-7. (1,2) An allergic etiology has also been contemplated in the past. (3)


References
Pityriasis Rosea Pityriasis Rosea 01/02/2013
Pityriasis Rosea - Presentation >>
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