[A new-old allergen: propolis contact hypersensitivity 1992-2021].

Introduction: Propolis is a resinous substance collected by bees. Its use is widespread in cosmetics and natural medi-cine because of variable beneficial effects. Local application and consumption may cause hypersensitivity.

Preservative Contact Hypersensitivity among Adult Atopic Dermatitis Patients.

Atopic dermatitis (AD) is a chronic inflammatory disease characterised by an impaired skin barrier. The prolonged use of topical preparations containing medications, emollients, fragrances and preservatives may increase the risk of contact hypersensitivity (CHS). In the Allergy Outpatient Unit of the Department of Dermatology, Venereology and Dermatooncology of Semmelweis University, 5790 adult patients were patch tested between 2007-2021 with the European Environmental Baseline Series according to international standards.

[Nickel sensitization: impact of the European Union Nickel Directives].

Unlabelled: Összefoglaló. Bevezetés: A nikkel széleskörűen elterjedt fém és kontaktallergén. Megtalálható mindennapi használati tárgyainkban, feldolgozza az ipari termelés, és az egészségügyben is rendre bővül alkalmazási köre.

Contact hypersensitivity in adolescents.

Background: Contact hypersensitivity is common in adolescents, but data in the literature are limited. Adolescents often use cosmetics, wear jewelry, and obtain tattoos, which can be sources of allergens.

Methods: This was a retrospective, noninterventional cohort study of 100 adolescents (aged 13-18; 74 girls, 26 boys) who were consecutively patch tested.