[Contact urticaria caused by skin test in pyrazolone allergy].

Abstract	About one third of patients with anaphylactic reactions to pyrazolones showed contact urticaria induced by to at least one pyrazolone after 30-60 min in patch test. This reaction was never observed in patients with various exanthemas or allergic contact dermatitis to these medicaments. Contact urticaria in patch test was mostly caused by propyphenazone, aminophenazone, and metamizole. The suspicious pyrazolone provoked positive results in only about 70%. No correlation could be found between contact urticaria in patch test and severity of allergic history, short interval before skin test and atopic constitution.
Authors	O M Maucher, A Fuchs
Journal	Der Hautarzt; Zeitschrift fur Dermatologie, Venerologie, und verwandte Gebiete (Hautarzt) Vol. 34 Issue 8 Pg. 383-6 (Aug 1983) ISSN: 0017-8470 [Print] Germany
Vernacular Title	Kontakturtikaria im Epikutantest bei Pyrazolonallergie.
PMID	6618883 (Publication Type: English Abstract, Journal Article)
Chemical References	Pyrazoles Pyrazolones pyrazolone
Topics	Adolescent Adult Aged Anaphylaxis (chemically induced) Drug Hypersensitivity (diagnosis) Female Humans Male Middle Aged Patch Tests Pyrazoles (adverse effects) Pyrazolones Skin Tests (adverse effects) Urticaria (chemically induced)

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