The nurse is administering an oral antihistamine at bedtime to a child with atopic dermatitis (eczema). Which antihistamine should the nurse expect to be prescribed at bedtime?
a. Cetirizine (Zyrtec)
b. Loratadine (Claritin)
c. Fexofenadine (Allegra)
d. Diphenhydramine (Benadryl)
ANS: D
Oral antihistamine drugs such as hydroxyzine or diphenhydramine usually relieve moderate or severe pruritus. Nonsedating antihistamines such as cetirizine (Zyrtec), loratadine (Claritin), or fexofenadine (Allegra) may be preferred for daytime pruritus relief. Because pruritus increases at night, a mildly sedating antihistamine such as Benadryl is prescribed.
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