Solar urticaria is a relatively rare immunoglobulin E-mediated photodermatosis that is caused by specific, yet diverse wavelengths of light. The history, epidemiology, clinical manifestations, histology, etiology/pathogenesis, differential diagnosis, treatment, course, and prognosis of solar urticaria are reviewed herein.

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This US database provides multidisciplinary information on pediatric ACD, rates of PPT, and relevant RPPT reactions, validating the high rates of pediatric ACD previously reported in the literature. The registry database is the largest comprehensive collection of US-only pediatric patch test cases on which future research can be built. Continued collaboration between patients, health care providers, manufacturers, and policy makers is needed to decrease the most common allergens in pediatric consumer products.

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