In 1993 the Brazilian Contact Dermatitis Research Group was founded and its main goal was to standardize a Brazilian patch test set of 30 allergens.Some are shared by other standard series and others are substances commonly used in Brazil, mainly popular topical medications. During 1995 and 1996 the standard set was tested on 967 patients from the state of Sao Paulo. 62% had positive reactions. The most common sensitizing substances were nickel sulfate (25,1%), thimerosal. (16, 3%) and quaternium. 15 (11,2%). During February 1999 to July 2001 the Contact Dermatitis Clinic in Belo Horizonte patch tested 437 patients to Brazilian Standard series. 63% showed positive and relevant reaction to common allergens like potassium dichromate (36,2%), nickel sulfate (30,8%), cobal chloride (25,7%) and thimerosal (17,7%). Differences among the results in some regions were observed due to different local habits.
In 1993 the Brazilian Contact Dermatitis Research Group was founded with the purpose to standardize a series of allergens for patch testing and advise professionals in order to guarantee a standardized performance. The Brazilian standard series was composed with 30 allergens, some of them shared with other standard series commonly used in North America and Europe, others are substances wide-spread in Brazil, mainly popular topical medications.In detail, the allergens are: Neomycin sulfate,benzocaine,quinoline mix, formaldehyde, quaternium 15, thimerosal, paraben mix, kathon, thiuran mix, mercapto mix, carba mix, black rubber mix, lanolin, nickel sulfate, potassium dichromate, cobalt chloride, balsam of peru, perfume mix, epoxy, p-tert-butylphenol formaldehyde, colophony, ethylenediamine dihydrochloride, p-phenylenediamine.
Ring, J; Weidinger, S; Darsow, U