Analysis of Patchtest Results of 57 Cases of Para Eczema and Dermatitis Dermatitis

Objective To explore the characteristics of contact allergens in eczema and dermatitis.Methods Fifty-seven cases of eczema and dermatitis were tested with a standardized screening antigen kit provided by immunity research lab in department of dermatology of the first hospital affiliated to Nanjing medical university.Results Of the 57 patients tested,78.9%(45/57)had at least one positive allergen among 18 of 20 standardized creening antigen.The top five allergens were nickel sulfate(26.3%),potassium dichromate(21.1%),cobalt chloride(17.5%),thimerosal(17.5%),fragrant mix(10.5%).The positive reaction rates to allergens among eczema,navel dermatitis and pompholyx had no statistical difference,but was significantly higher than that in facial recurrent dermatitis P0.01. Conclusion Patchtesting is helpful in identifying the property of contact allergens in para eczema and dermatitis dermatosis,and preventing systemic contact dermatitis(SCD).