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BACKGROUND The North American Contact Dermatitis Group (NACDG) tests patients who have suspected allergic contact dermatitis with a broad series of screening allergens, and publishes periodic reports of its data. OBJECTIVE To report the NACDG patch-test results from January 1, 2005, to December 31, 2006, and to compare results to pooled test data from the(More)
BACKGROUND Patch testing is an important diagnostic tool for determination of substances responsible for allergic contact dermatitis. OBJECTIVE This study reports the North American Contact Dermatitis Group (NACDG) patch testing results from January 1, 2009, to December 31, 2010. METHODS At 12 centers in North America, patients were tested in a(More)
BACKGROUND AND DESIGN Patient preferences for health outcomes can be explicitly assessed and expressed in quantitative terms known as utilities. Three standard methods for utility assessment have been used to quantify patient preferences, but these methods have not previously been applied to skin disease. Eighty-seven patients with psoriasis from a tertiary(More)
OBJECTIVES To determine the frequency of positive and relevant patch tests in children referred for patch testing in North America; to compare results of patch testing children and adults; and to compare our results with international data on contact allergy in children. DESIGN Retrospective cross-sectional analyses of North American Contact Dermatitis(More)
BACKGROUND Patch testing is an important diagnostic tool for assessment of allergic contact dermatitis (ACD). OBJECTIVE This study documents the North American Contact Dermatitis Group (NACDG) patch-testing results from January 1, 2011, to December 31, 2012. METHODS At 12 centers in North America, patients were tested in a standardized manner with a(More)
Patients presenting with a "red face" challenge clinicians to consider a broad differential diagnosis that includes contact dermatitis. The diagnosis may be obscured or complicated by underlying actinic damage or rosacea. Unraveling this Gordian knot to arrive at a precise and accurate diagnosis takes patience and practice. The collective experience of our(More)
BACKGROUND Relatively little is known about the epidemiology of allergic contact dermatitis in older individuals. OBJECTIVES We sought to determine the frequency of positive and clinically relevant patch test reactions in older individuals (≥ 65 years old) referred for patch testing, and to compare these results with those of adults (≤ 64-19 years) and(More)
OBJECTIVES To characterize patients with anogenital dermatitis referred for patch testing by the North American Contact Dermatitis Group, to identify common allergens, and to explore sex associations. DESIGN Retrospective, cross-sectional analysis of the North American Contact Dermatitis Group database, 1994-2004. PATIENTS Five hundred seventy-five(More)
BACKGROUND Hand dermatitis, including irritant and allergic contact dermatitis (ACD), is common. OBJECTIVE To evaluate allergens, relevant irritants, sources and occupations associated with hand contact dermatitis using North American Contact Dermatitis Group (NACDG) data. METHODS A cross-sectional analysis of 22,025 patients patch tested between 1994(More)