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Wiley InterScience | |||||||||
  Contact DermatitisVolume 36 Issue 3, Pages 147 - 149 Published Online: 11 Apr 2006 © 2010 John Wiley & Sons A/S
Abstract | References | Full Text: PDF (Size: 466K) | Related Articles | Citation Tracking  Skin reactions to hydroxyzine Copyright Munksgaard 1997 KEYWORDS hydroxyzine • histamine H1-antagonists • antihistamine drug eruption • adverse drug reaction • lack of cross-sensitivity ABSTRACTSensitivity to histamine H1-antagonists has mainly been observed with phenothiazine and ethylenediamine, and is very rare with hydroxyzine. We report 3 cases of sensitization to hydroxyzine, which was prescribed to treat urticaria and atopic dermatitis. A generalized maculopapular eruption appeared shortly after taking the drug. Patch tests with Atarax® tablet were positive +++, and ++ or +++ with different dilutions of hydroxyzine. Patch tests with ethylenediamine, piperazrne and other antihistamines were negative: therefore, there is no cross-allergy. We believe these rapid systemic reactions to hydroxyzine after the initial dose may have been due to prior systemic sensitivity to this drug, which cannot be used topically. Allergy to antihistamines must be considered when cutaneous lesions worsen on such therapy. Accepted for publication 23 November 1996 | 
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