An Analytical study of clinical features in 100 cases of Pityriasis Rosea

In this clinical analysis, 100 cases of Pityriasis Rosea were analysed in Department of Dermatology, Coimbatore Medical College Hospital, Coimbatore the following points were observed · Clinical diagnosis of Pityriasis Rosea was easy, based on the presence of Herald Patch, characteristic morphology and distribution pattern of the lesions. · The present study has revealed male preponderance. · The age incidence was found to be high in adolescents and young adults. · No familial incidence was observed. · The diseases were more frequent in the winter and rainy months with sporadic cases occurring throughout the year. · Factors like wearing of new garments, stress and upper respiratory tract infections were found to precipitate the disease in some cases. · The Herald Patch was observed to occur in the covered areas of the body, mostly over the trunk. The secondary eruptions had a wide spectrum of morphological forms with a variable distribution. Unilateral Pityriasis Rosea was also observed in this study. · Most of the patients had complete resolution of the lesions in 6 to 9 weeks but, erythema multiforme like Pityriasis Rosea and Pityriasis Rosea with palmoplantar involvement tends to persist for a longer duration. · In most of the patients the lesions vanished without trace and post inflammatory hypopigmentation was noted in few patients, but none had hyperpigmentation. · There was no complication in any of the patients. · History of recurrence of the disease was also present in 2 cases. · Histopathological study showed the features of non specific chronic dermatitis. In conclusion most of the clinical features, course and complications were consistent with the findings reported in the literature