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Systemic allergic dermatitis caused by Apiaceae root vegetables.

Evy Paulsen¹, Thomas H Petersen, Xavier C Fretté

¹Department of Dermatology and Allergy Centre, Odense University Hospital, University of Southern Denmark, DK-5000, Odense C, Denmark.

Contact Dermatitis

|October 10, 2013

Summary

This summary is machine-generated.

Delayed-type hypersensitivity to Apiaceae root vegetables like carrots can occur. This case highlights non-occupational sensitization, suggesting falcarinol is not the primary allergen.

Keywords:

Apiacae Apium graveolens var. rapaceum Daucus carota Pastinaca sativa allergic contact dermatitis carrot celeriac parsnip patch testing systemic allergic dermatitis

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Area of Science:

Dermatology
Allergology
Plant Chemistry

Background:

Immediate hypersensitivity to Apiaceae (Umbelliferae) vegetables is common.
Delayed-type hypersensitivity reactions are infrequently documented.

Observation:

A patient presented with systemic contact dermatitis after consuming Apiaceae root vegetables.
Diagnostic testing included prick tests, patch tests, and chemical analysis.

Findings:

The patient exhibited contact sensitivity to celeriac, parsnip, and carrot.
Despite testing negative for falcarinol, the analyzed sample contained this compound.

Implications:

This case represents the first report of systemic contact dermatitis from Apiaceae root vegetables.
The findings suggest falcarinol may not be the causative agent in this type of non-occupational sensitization.