Which statement made by the client with severe type IV sensitivity to poison ivy indicates correct understanding of the cause and management of this problem?
A. "I will drink at least 3 L of water a day to prevent kidney damage."
B. "I will always wear a medical alert bracelet for this allergy."
C. "I will try to avoid coming into contact with poison ivy."
D. "I will ask my doctor for an EpiPen prescription."
C
Type IV hypersensitivity reactions are cell-mediated by T lymphocytes in the skin. The com-plexes do not form or precipitate in the kidney. This type of hypersensitivity does not represent an immediate life-threatening emergency and does not respond to either adrenergic agonists (ep-inephrine) or histamine antagonists (diphenhydramine). Avoidance of the offending allergen is the most appropriate intervention.
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