Urticaria Pigmentosa as a Problem in Diagnosis

Abstract
THE syndrome of urticaria pigmentosa is one of the rarities encountered in pediatric practice. Patients with this syndrome are frequently seen by several physicians before the diagnosis is made. The following report of 2 such cases emphasizes several aspects of the clinical picture that may lead to the diagnosis. A brief consideration of what is now known of the metabolic anomaly is also presented.Case ReportsCase 1. P.D., a 17-month-old boy, was referred to the Hôpital Sainte-Justine for investigation of a skin rash. He had been born at full term, with a birth weight of 2.8 kg. (6 1/4 . . .

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