Sensitization patterns in Compositae-allergic patients with current or past atopic dermatitis

Area of Science:

• Dermatology
• Allergology
• Immunology

Background:

• A link between Compositae (Asteraceae) plant sensitization and atopic dermatitis (AD) is suggested by existing research.
• Understanding sensitization patterns in AD patients exposed to Compositae is crucial for diagnosis and management.

Purpose of the Study:

• To characterize Compositae sensitization in patients with current or past atopic dermatitis.
• To identify specific allergens and co-sensitivities in this patient group.

Main Methods:

• Analysis of consecutive Compositae-sensitive patients with a history of atopic dermatitis or eczema.
• Skin prick testing using Compositae mix, sesquiterpene lactone mix, and parthenolide.
• Evaluation for co-existing allergies, including cobalt.

Main Results:

• Fifty-one patients (35 female, 16 male) were included; mean age was lower than in non-atopics.
• Compositae mix, sesquiterpene lactone mix, and parthenolide detected 96% of sensitizations.
• Occupational sensitization was noted in 22%; dandelion was a key allergen in children.
• Cobalt allergy was present in 37% of patients.

Conclusions:

• Atopic dermatitis patients can develop Compositae allergy occupationally and non-occupationally at any age.
• Screening for Compositae allergy should be standard, with dandelion extract testing for children.
• Frequent co-sensitization to cobalt was observed but likely unrelated to Compositae allergy.