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The article discusses the case study about a 71-year-old man with a history of stroke treated with aspirin and has acute eczema after local application that contains aceclofenac. It is a nonsteroidal anti-inflammatory drug and analgesic drug of phenylacetic acid group that is reported to cause allergic contact dermatitis due cross reactivity between aceclofenac and diclofenac. The patient was patch tested and has negative results.

Introduction: Henna tattoos are a very common practice in the adolescent population. Henna is very often admixed with para-phenylenediamine (PPDA) to improve the appearance of the tattoo. PPDA is a potent allergen, and is a frequent cause of allergic contact dermatitis (ACD)., Material and Method: A study was conducted on the results of 726 consecutive children who had been patch tested in the University General Hospital Consortium of Valencia between 1980 and 2015., Results: Almost half (49.7%; (361 cases) of the children had one or more positive patch test findings, with 4.7% (34) being allergic to PPDA. Mean age of patients allergic to PPDA was 12.4 years, and 44.2% were male. There were 2 cases (5.9%) of atopic dermatitis. Of the positive reactions, 73.5% were considered to be current clinically relevant. The sensitisation origin was a Henna tattoo in 50% of cases., Conclusion: PPDA sensitisation is relatively common in the child and adolescent population. The most frequent origin is the performing of Henna tattoos adulterated with PPDA. Adolescents are at the higher risk of developing ACD due to Henna tattoos. Henna tattooing should be strongly discouraged in children., (Copyright © 2016 Asociación Española de Pediatría. Publicado por Elsevier España, S.L.U. All rights reserved.)

Background: Since the recent description of immediate hypersensitivity to latex, many cases have been reported, some of them with anaphylactic reactions. The aim of this study is to analyze the clinical findings, diagnostic management and therapeutic procedures in these patients., Methods: We reviewed the clinical findings in 15 patients with contact urticaria to latex from our files. Use-test with a surgical glove, prick-test trough a rubber glove, RAST to latex and standard patch-tests were performed in each case., Results: We found a M:F ratio of 1:4 (3 males and 12 females) and the mean age at diagnosis was 33 years. Atopic background was present in 60% of cases and 46% were health care workers. Systemic manifestations of allergy were found in 25% of patients. Two cases developed anaphylactic shock. Cutaneous manifestations included localized contact urticaria in 33% of cases, chronic hand eczema and urticaria in 46%, and immediate contact dermatitis in 20%. All cases showed a positive use-test, while prick-test and RAST showed positive results in only 75% of patients. Positive patch-test to rubber accelerators were found in 33% of cases., Conclusions: Latex immediate hypersensitivity is frequently seen at present. Its prevalence in health care workers is high. Atopic constitution, chronic hand eczema, continuous gloves usage, and contact dermatitis to rubber additives are predisposing factors. Diagnosis can be assessed by clinical findings and use-test, confirming by prick-test and RAST.

Epicutaneus tests were used to study 168 children without dermatitis (aged 6 months to 14 years) divided into two groups: 88 atopic cases (53 males and 35 females) and 76 non atopic children (44 males and 31 females). Epicutaneous testing proved positive in 22.7 of atopic children, and in 17.3 por 100 of non atopic cases; there were no statistically significant differences between the two groups, and vesicular reactions predomined in both. Nickel was the contact allergen of greatest predominance among the atopic and non atopic children (17 and 9.3% respectively), followed by mercury derivatives (5.5%), neomycin (2.4%) and dichromates (1.8%).

We have carried out retrospective study of 190 children with dermatitis, aged from 2 to 14 years old. 67 (35%) of these children showed positive patch-test reactions. Nickel sulphate (35%) was the first allergen. Form 1979, once mercury was introduced in the GEIDC standard series, it becomes the more common iatrogenic allergen in childhood in our country. Other allergens also responsible for the dermatitis were mercaptobenzothiazole (12%), cobalt (9%) and p-phenylenediamine (7%).