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Abstract：
Actinic prurigo is a rare, idiopathic chronic photodermatosis of childhood characterized by excoriated papules, nodules, and plaques in sun-exposed areas. It is notoriously difficult to treat. The disorder involves a type IV hypersensitivity reaction driven by both Th1 and Th2 inflammatory pathways, the latter of which leads to secretion of IL-4, IL-5, IL-13, and production of B cells, IgE, and IgG4. Dupilumab, an IL-4 receptor antagonist, disrupts the Th2 pathway. We present a pediatric patient with severe, recalcitrant actinic prurigo who achieved rapid and sustained clearance with dupilumab.
摘要：
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