The student learns that which skin lesion is mediated by the immunoglobulin E (IgE)-stimulated release of histamine, bradykinin, or kallikrein from mast cells?
A)Dermatitis
B)Scleroderma
C)Urticaria
D)Cutaneous vasculitis

Question

Quizplus · Accepted Answer

Only urticaria is mediated by the IgE-stimulated release of histamine, bradykinin, or kallikrein from mast cells or basophils, or both, which causes the endothelial cells of skin blood vessels to contract. Dermatitis is a general term for a particular type of skin inflammation. Scleroderma can be local or systemic and involves connective tissue. Cutaneous vasculitis involves the deposit of immune complexes.

The Student Learns That Which Skin Lesion Is Mediated by the Immunoglobulin