Abstract:

Objective To assess the environmental contact allergens in patients with allergic contact dermatitis （ACD）. Methods Totally, 167 patients with ACD were included in this study. All the patients underwent patch test. Results Of these patients, 92（55.1%） were diagnosed as facial ACD, and 148 showed positive patch test results （88.6%）. The six most common allergens in a decreasing order were nickel sulfate, fragrance mix, paraphenylenediamine, thimerosal, octanoates and amerchol L 101. Conclusion Patch test may be an efficient way to confirm the cause of ACD.