Document Detail

Positive nickel patch tests in infants are of low clinical relevance and rarely reproducible.
MedLine Citation:
PMID:  23331531     Owner:  NLM     Status:  In-Data-Review    
BACKGROUND: We have previously reported patch test reactivity to nickel sulphate in a cohort of unselected infants tested repeatedly at 3-18 months of age. A reproducible positive reaction at 12 and 18 months was selected as a sign of nickel sensitivity provided a patch test with an empty Finn chamber was negative. A reproducible positive reaction was seen in 8.6% of the infants. The objective of this study is to follow-up on infants with alleged nickel sensitivity.
METHODS: A total of 562 infants were included in the cohort and patch tested with nickel sulphate (ICDRG guidelines). The 26 children with a positive patch test reaction to nickel sulphate at 12 and 18 months were offered repeated patch tests at 3 and 6 yr.
RESULTS: Among the 21 children tested at both 12 months, 18 months and at 3 and 6 yr only 2 of 21 had reproducible nickel reactions (one clinically relevant), 13 of 21 were negative and 6 of 21 were negative at 3 or 6 yr.
CONCLUSIONS: Only 9.5% of the children had reproducible nickel sulphate reactivity, while 62% became negative. The results are noteworthy and can be interpreted in different ways: Repeated nickel patch tests did not cause patch test sensitization. The test reactions in infancy are probably of irritant or non-specific nature. Hence, nickel patch tests should only be performed in small children if there is a clinical suspicion of nickel-induced allergic contact dermatitis.
Charlotte G Mortz; Henrik F Kjaer; Esben Eller; Morten Osterballe; Lene A Norberg; Arne Høst; Carsten Bindslev-Jensen; Klaus E Andersen
Publication Detail:
Type:  Journal Article    
Journal Detail:
Title:  Pediatric allergy and immunology : official publication of the European Society of Pediatric Allergy and Immunology     Volume:  24     ISSN:  1399-3038     ISO Abbreviation:  Pediatr Allergy Immunol     Publication Date:  2013 Feb 
Date Detail:
Created Date:  2013-01-21     Completed Date:  -     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  9106718     Medline TA:  Pediatr Allergy Immunol     Country:  England    
Other Details:
Languages:  eng     Pagination:  84-7     Citation Subset:  IM    
Copyright Information:
© 2012 John Wiley & Sons A/S. Published by Blackwell Publishing Ltd.
Department of Dermatology and Allergy Centre, Odense University Hospital, University of Southern Denmark, Odense C, Denmark.
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