Wauconda, IL
A 32-year-old female asked:
What if i am concerned my hives are caused by an antihistamine in the first place? i.e. zyrtec and allegra (fexofenadine)
3 doctor answers • 5 doctors weighed in
Dr. Brian Novickanswered
Allergy and Immunology 44 years experience
Very rare : Hives usually come and go randomly. So you may confuse an outbreak with being caused by something else (though not really). So best to see an allergist.
5.5k viewsReviewed >2 years ago
Dr. Stevan Cordasanswered
Internal Medicine 58 years experience
Hives: That is rare. Especially if suspect it from claritin, (loratadine) allergra, benadry, and zyrtec. Sometimes you have to realize that we can't find a cause but there is a long list of causes.
5.5k viewsAnswered >2 years ago
Dr. Marianna Postanswered
Family Medicine 18 years experience
Go to allergy dr: Go to an allergy doctor and get tested. Usually if you take antihistamine and break out more you might suspect a reaction to antihistamine, but you won't know for sure unless it happens every time you take it, or you get an allergy testing.
5.5k viewsAnswered >2 years ago
1 comment
Dr. Steven Machtinger commented
Allergy and Immunology 45 years experience
As an allergy doctor I suggest that you stop the medication first. Wait a few days to see if hives go away 5 days is enough.
Nov 4, 2012
Last updated May 6, 2019
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