While the nurse is obtaining a drug history from a patient, the patient tells the nurse that he is allergic to penicillins and has also experienced a rash when he took a cephalosporin
The nurse interprets this information as indicating which of the following?
A) Hypersensitivity
B) Cross-sensitivity
C) Anaphylactoid reaction
D) Anaphylaxis
Ans: B
Feedback:
Once an individual is allergic to one penicillin, he or she is usually allergic to all of the penicillins. Those allergic to penicillin also have a higher incidence of allergy to the cephalosporins. Allergy to drugs in the same or related groups is called cross-sensitivity. Hypersensitivity is an allergic reaction to one substance. Anaphylactoid reaction is an unusual or exaggerated allergic reaction. Anaphylaxis or anaphylactic shock is a severe form of hypersensitivity that occurs immediately and can be fatal.
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