Results of patch-tests from Santa Casa de Belo Horizonte Dermatology Clinic, Belo Horizonte, Brazil, from 2003 to 2010.

This Dermatology Clinic tests referred patients who have suspected allergic contact dermatitis. The patch-test results (1406 patients) from July 1(st), 2003 to June 30(th), 2010 will be reported and compared to the data from the Brazilian Contact Dermatitis Study Group (GBEDC). A standardized patch test (30 allergens) was used in all of these patients. Depending on the complaint and suspected allergen another battery was also used (cosmetic battery).The most frequent allergens of Brazilian Standard Patch Test Series and Cosmetic Brazilian Standard Patch Test Series were nickel and tosylamide formaldehyde resin, respectively. Allergic contact dermatitis was the final diagnosis in 58.2%. Studies about allergen frequency may enable the performance of prevention programmes.