Pityriasis rotunda. "Pseudo-ichtyose acquise en taches circulaires": report and study of first case in UAR

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Abstract
This rare condition has been previously described in Japan. The disease is manifested by strictly circular scaly brownish patches, darker or lighter than the surrounding skin, of variable number and diameter. This report is the 1st in the United Arab Republic, North Africa, and the Middle East areas. It is not related to any diagnosable internal disorder. The surrounding ichthyotic skin, freedom of flexures, winter exacerbations and summer remissions, and the histopathologic picture support the idea that this disease is a special type of acquired ichthyosis.

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