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Background. Contact dermatitis is characterized by pruritic skin lesions with high prevalence rates. Our objective is to describe the clinical and epidemiological characteristics of a population with suspected contact dermatitis who underwent to a patch testing using an adapted Latin American baseline series. Methods. Observational, descriptive, analytical clinical study with prospective data collection was performed. 208 participants who underwent patch testing using an adapted Latin American baseline series containing 40 allergens were analyzed. The prevalence of contact allergies was compared with data from the literature. Pearson's chi-square test was used for qualitative variables. Quantitative variables were compared using the Mann-Whitney U test. The significance of the regression parameters was tested using the Wald statistical test. Results. A total of 69.7% had one or more positive tests. Among those, 82.8% were women (OR 1.371; p = 0.398). The hands were the most commonly affected site at 43%. An occupational history was detected in 19.2%. The most common allergens were nickel sulfate (32.2%), sodium tetrachloropalladate (19.7%), fragrance mix I (15.4%), and methylisothiazolinone (13.5%). In multivariate logistic regression models, nickel was significantly related to female sex, as well as palladium. Fragrance mix I was related to a family history of allergy (p less than 0.05). Methylisothiazolinone was statistically significantly related to face and hand lesions. Conclusions. This study demonstrated a detailed profile of a population with suspected allergic contact dermatitis. Our patch test results, using an adapted Latin American baseline series, represent a significant update of this important diagnostic tool.

Prospective study of consecutive patch testing in patients with contact dermatitis using an adapted Latin American baseline series