Occupational contact allergy: The European perspective-Analysis of patch test data from ESSCA between 2011 and 2020.

Background: Occupational skin diseases have led the occupational disease statistics in Europe for many years. Especially occupational allergic contact dermatitis is associated with a poor prognosis and low healing rates leading to an enormous burden for the affected individual and for society.

Objectives: To present the sensitization frequencies to the most relevant allergens of the European baseline series in patients with occupational contact dermatitis (OCD) and to compare sensitization profiles of different occupations.

European Surveillance System on Contact Allergies (ESSCA): polysensitization, 2009-2014.

Background: Polysensitization, defined as being allergic to three or more haptens from the European baseline series, is considered to reflect increased susceptibility to developing a contact allergy, and is likely to be associated with an impaired quality of life.

Objectives: To evaluate the prevalences of polysensitization across Europe and to analyse factors associated with polysensitization.

Methods: Patch test data collected by the European Surveillance System on Contact Allergies (ESSCA; www.

Development and Significance of the E-surveillance System for Contact Allergies in Slovenia.

This paper describes the development and significance of online systems for the collection and analysis of medical data (patch test results) with a web application. Modern digital tools greatly aid in collecting, combining, and preserving the data in a way that is friendly, undemanding and time-efficient for the dermatologist. Creating a central database for the results of patch testing provides a better picture of contact sensitivity and characteristics of allergic contact dermatitis in Slovenia.