Indian Journal of Dermatology
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Year : 2022  |  Volume : 67  |  Issue : 3  |  Page : 258-264

Standard patch test results and clinical relevance: A cross-sectional study of 10-year retrospective experience

1 Department of Dermatology and Venereology, Faculty of Medicine, Akdeniz University, Konyaaltı, Antalya, Turkey
2 Department of Dermatology, Liv Hospital Ulus, Istanbul, Turkey

Correspondence Address:
Aslı Bilgic
Akdeniz University Faculty of Medicine, Department of Dermatology and Venereology, H Bloc, 1. Floor, 07059, Konyaaltı, Antalya
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Source of Support: None, Conflict of Interest: None

DOI: 10.4103/ijd.ijd_965_21

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Background: Allergic contact dermatitis (ACD) is a type IV hypersensitivity reaction, and The European Standard Series (ESS) Patch Test (PT) is widely used in determining the possible responsible allergens causing ACD. The dynamic nature of the industrial products, socioeconomic and environmental factors cause the frequency of common allergens to change over the years and among different regions. Aims and Objectives: This study aimed to retrospectively evaluate the results of ESS PT of our centre in the last decade, and determine the current spectrum of allergens and their clinical relevance. Materials and Methods: The data of patients who underwent ESS PT in our clinic between January 2010 and March 2020 were included in the study. The patient files were examined retrospectively. The clinical relevance was evaluated according to the COADEX system. Statistical analysis used: SPSS for Windows version 23.0 software program. Results: The data of 1037 patients [623 (60.1%) female, 414 (39.9%) male] were analysed. The mean age was 38.34 ± 14.55 years. The five most common allergens were nickel sulphate (23.1%), cobalt chloride (12%), potassium dichromate (9.5%), Fragrance mix II (7.3%) and balsam of Peru (5.7%). According to the COADEX coding system, current relevance was detected in 319 (49.3%) of 646 patients who had a positive reaction to any substance in the patch test. Conclusion: Our study showed that with increasing awareness in society, the tendency to avoid some well-known allergenic substances and consumer products causes changes in common allergens. These results prove the value of long-term surveillance of contact allergy.

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