Contact allergen sensitivity in children with contact dermatitis

Area of Science:

• Pediatric Allergy and Immunology
• Dermatology
• Contact Hypersensitivity

Background:

• Allergic contact dermatitis (ACD) is a delayed-type hypersensitivity reaction.
• The prevalence of ACD allergens is increasing.
• Skin patch testing is a valuable diagnostic tool for ACD.

Purpose of the Study:

• To identify the most common contact allergens in pediatric patients.
• To investigate the prevalence of ACD in children.

Main Methods:

• A retrospective study of 80 children diagnosed with contact dermatitis.
• Patients underwent TRUE TEST patch testing between March 2017 and February 2018.
• Data collected included demographics, lesion location, and itch score.

Main Results:

• 57.5% of children showed a positive response to at least one allergen.
• The most common allergens identified were Nickel sulfate (14.8%), CI + Me-Isothiazolinone (10%), and Thiuram Mix (6.3%).
• No significant differences in clinical characteristics were observed based on nickel sensitization.

Conclusions:

• ACD should be considered in the differential diagnosis of chronic dermatitis in children.
• Nickel sulfate is a primary allergen, with increasing sensitization to others linked to cosmetic and environmental exposures.
• Identifying specific allergens is crucial for effective management of pediatric ACD.