2021, Vol. 4, Issue 2, Part A

Author(s)
Dr. Shwetha V Rajiv

Abstract
Pityriasis rosea (PR) is a relatively common self-limiting papulosquamous disorder, characterized by acute onset of a large scaly, erythematous plaque (herald plaque) followed by several smaller lesions distributed along the lines of cleavage on the trunk and extremities (secondary eruptions). The approximate incidence of PR is 0.5–2% and affects people of both sexes in 15–30 years age group although also seen commonly in elderly and children.2 Spontaneous resolution is seen within 6-8 weeks but may be earlier or delayed until 3-6 months Numerous hypotheses have been postulated about the exact cause of PR, incriminating both non infective agents such as viruses, bacteria, spirochetes, and no infective etiologies such as atopy and autoimmunity. The distinctly programmed clinical course, lack of recurrence for most of the patients, seasonal variation, and clustering of cases provide evidence in favour of an infective etiology, probably viral. However a conclusive infectious cause has not yet been identified. In this background, we set out to describe the various clinical pattern of the disease, epidemiologic factors among patients encountered in out-patients attending dermatology department in our locality and to compare the results with the present literature.

DOI: https://doi.org/10.33545/26649411.2021.v4.i2a.79

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