Supplemental Patch Testing Identifies Allergens Missed by Standard Screening Series.

Supplemental patch testing is an adjunct to standard patch test screening series. To determine the demographics, characteristics, frequency, relevance, and interpretation of patch test reactions for supplemental patch testing. Retrospective study of patients tested 2017-2020 with North American Contact Dermatitis Group (NACDG) and supplemental screening series (Supplemental Series A [SSA], Supplemental Series B [SSB]).

Contact Allergy in Canada Versus United States: Analysis of the North American Contact Dermatitis Group Data 2005-2016.

Objective: The aim of the study was to describe the differences in contact allergy between the United States (US) and Canada.

Methods: This is a retrospective cross-sectional analysis of the North American Contact Dermatitis Group data from 2005 to 2016. Frequencies of demographics, clinical characteristics, positive reactions, trends, and occupations were calculated.

Fragrance- and Botanical-Related Allergy and Associated Concomitant Reactions: A Retrospective Analysis of the North American Contact Dermatitis Group Data 2007-2016.

Importance: When fragrance- and botanical-related (F/BR) allergy is identified, concomitant reaction (CR) frequencies can help direct avoidance recommendations.

Objective: This study aimed to determine the CR rates for F/BR allergens.

Design: A retrospective cross-sectional analysis of the North American Contact Dermatitis Group data 2007-2016 was conducted.

Essential oils debunked: separating fact from myth.

Essential oils (EOs) are present in products we use at home, at work, and in our environment. In recent years, there has been an increasing trend to use EOs rather than products containing chemicals perceived as harmful by consumers. In this review, we separate the facts from the myths surrounding EOs and provide scientifically sound answers to common questions.

Recurrence of linear basal cell carcinoma.

Linear basal cell carcinoma (LBCC) is a rare morphologic variant of basal cell carcinoma. We report a case of a patient with a recurrent linear lesion on the supraclavicular neck with prior repeated mild trauma to the area. The patient was diagnosed with recurrent LBCC after a prior excision of an LBCC in the same area.