010 The prevalence and relevance of patch testing with textile dyes’

Skin exposed to close contact with textile is vulnerable develop allergic dermatitis due allergens. Disperse dyes are one of the most common Historically, p-phenylenediamine (PPD) has been considered be a screening agent for dermatitis. Since 2015, dye mix (TDM) consisting eight disperse incorporated into European baseline series. However, it unknown if TDM identifies all patients allergy. The objective study was assess added value performing patch testing individual in addition TDM. In this retrospective cohort study, suspected allergy who had undergone series, as well an extensive series at Amsterdam University Medical Centers between January 2015 and December 2021 were included. Of 209 tested patients, 54 (25.8%) positive or dye. Orange 3 (9.6%) followed by Blue 106 (4.8%) causing test reaction. Patients ≥ 40 years age hand significantly higher chance (P=0.044 P=0.12). PPD (n=24, 11.5%) more often sensitized (P<0.001). 28 (51.9%) clinically relevant No reactions seen that solely which not conclusion,this shows beneficial having Otherwise, 46.3% 35.7% reaction would have missed.