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[The sweet Christmas rash].
Mette Gyldenløve1, Steen Nepper-Christensen, Jacob P Thyssen
1Hud- og allergiafdelingen, Gentofte Hospital, Niels Andersens Vej 65, 2900 Hellerup. mette.gyldenloeve@regionh.dk
Christmas tree hypersensitivity is a rare allergic reaction. Two cases highlight allergic contact dermatitis and rhinitis, managed by avoiding natural trees.
Area of Science:
- Allergology
- Immunology
- Environmental Health
Background:
- Christmas tree hypersensitivity is an underreported condition.
- Allergic reactions to natural Christmas trees are uncommon.
- Limited medical literature exists on this specific allergy.
Observation:
- Two patients presented with symptoms after Christmas tree exposure.
- A 51-year-old woman developed allergic contact dermatitis.
- A 41-year-old man experienced allergic rhinitis.
Findings:
- The female patient showed a positive patch test to colophony (rosin).
- The male patient had a positive skin prick test to Alternaria mould.
- Both patients' symptoms resolved upon avoiding natural Christmas trees.
Implications:
- Suggests colophony and moulds as potential Christmas tree allergens.
- Highlights the need for increased awareness of Christmas tree allergies.
- Recommends environmental modification (e.g., artificial trees) for affected individuals.
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