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complement-mediated autoimmune process. Urticaria (choice E) is an IgE-driven hypersensitivity process, usually occurring in adults. between 20 and 40 years old. Urticaria is characterized by wheals (edematous pruritic plaques), and typically affects the trunk and distal extremities. A 30-year-old woman presents complaining of nosebleeds. ................
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