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Pityriasis rosea is a common, acute, self-limited erythematous-squamous dermatosis, usually characterized by pink, oval-shaped lesions, involving the trunk and proximal extremities, usually sparing head, palms and soles. There is an absence of significant local and systemic manifestations.
It was the French physician Camille Melchior Gibert, in 1860, which first named this disease pityriasis (scaly) rosea (pink).
Although the classic presentation is easily diagnosed, atypical forms may present a greater challenge.
A viral etiology has been postulated, but this remains unproven.
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