Publications by authors named "K A Zug"

Allergic contact dermatitis is frequently caused by metals, including multiple metals simultaneously. To assess characteristics and associations of positive and clinically relevant patch test (PT) reactions with solitary and concurrent metal sensitization. A retrospective analysis of PT results for nickel, cobalt, and/or chromium from the North American Contact Dermatitis Group between 2001 and 2018 ( = 43,522).

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Cobalt is a recognized cause of allergic contact dermatitis (ACD); however, detailed information on patient characteristics, sites, and sources is lacking. The aim of the study is to assess trends in patch test reactions to cobalt and associated patient characteristics, common sources, and body sites affected. The study used a retrospective analysis of adult patients who were patch tested to cobalt by the North American Contact Dermatitis Group between 2001 and 2018 (n = 41,730).

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Patch testing is an important diagnostic tool for assessment of allergic contact dermatitis (ACD). This study documents the North American Contact Dermatitis Group (NACDG) patch testing results from January 1, 2019, to December 31, 2020. At 13 centers in North America, patients were tested in a standardized manner with a screening series of 80 allergens, and, as indicated, supplemental allergens.

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Article Synopsis
  • An updated understanding of allergic contact cheilitis is necessary, as it shows increasing prevalence across a study period from 2001 to 2018.
  • A retrospective analysis of over 43,000 patients revealed that about 4.8% had lips involved in dermatitis, with a notable rise in cases documented in later years.
  • The study found high rates of positive allergic reactions among patients with cheilitis, suggesting the importance of including a broader range of allergens in patch testing, especially those beyond standard NACDG screening.
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