Trends in patch-test results and allergen changes in the standard series: a Mayo Clinic 5-year retrospective review (January 1, 2006, to December 31, 2010).

Background: Patch testing is essential for identification of culprits causing allergic contact dermatitis.

Objective: We sought to identify trends and allergen changes in our standard series during 2006 to 2010, compared with our previous report (2001-2005).

Methods: We conducted a retrospective review of patch-test results.

Basics of patch testing for allergic contact dermatitis.

Patch testing is essential for identification of culprit allergens responsible for allergic contact dermatitis. This manuscript reviews how to perform patch testing and how to read and interpret the results.