Do you really know? What is Christmas tree syndrome?
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Dec 22, 2025 Discover the surprising Christmas tree syndrome and its symptoms, like sneezing and itchy eyes, caused by mould on your holiday tree. Learn how indoor humidity boosts mould growth, leading to allergy flare-ups. A 2011 study reveals various mould species lurking on real trees. Explore why new allergies may appear during the festive season, and uncover other seasonal allergy triggers. Lastly, consider creative, low-allergy alternatives to traditional trees while finding simple prevention tips to enjoy a festive atmosphere without the sneezing!
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Mould On Real Trees Causes Symptoms
- Christmas tree syndrome is an allergy driven by mould on real tree needles and trunk.
- Indoor warmth and humidity let outdoor mould spores multiply once the tree is brought inside.
Mould Spores Trigger Allergy And Asthma
- Moulds are fungi that release airborne spores which trigger allergy and asthma symptoms.
- A 2011 study found dozens of mould types on analysed trees, including Aspergillus and Cladosporium.
Holiday Changes Raise Allergy Risk
- Holiday exposures can introduce new allergies because they differ from usual routines.
- Fatigue and excess during the season can weaken immune defenses and worsen reactions.