What are the most frequent allergens that tested positive in allergy testings?
According to a hit list of allergens compiled by the German Surveillance System of Dermatological Hospitals (Interessenverbund der dermatologischen Kliniken – IVDK) the following substances are the most frequent triggers of allergies (conducted by an evaluation of 9676 tests in the year 2000): Nickel sulfate 15.5% Duftstoff-Mix (fragrance mix) 10.5% Balsam of Peru 8.8% Thiomersal 7.4% Cobalt chloride 5.4% Woolwax alcohols 4.2% Colophony 4.2% MDBGN(Dibromodicyanobutane)* 4.2% p-Phenylendiamine 4.1% Potassium dichromate 3.5% Thiuram-Mix 2.5% (Chlor-)Methylisothiazolinone* 2.3% Neomycine sulfate 2.3% Mercury(II) amide chloride 2.2% Terpentine (tee tree oil) 2.1% Formaldehyde* 1.8% Propolis 1.,8% Bufexamac 1.4% Benzocaine 1.4% Epoxy resin 1.2% Cetearylalcohol 1.2% Paraben-mix* 1.2% *) preservatives in cosmetics, among others Source: Ă„rztliche Praxis – Dermatologie (5), Sept.-Oct. 2001, p.