That Runny Nose Might Not Be a Cold: The Truth About "Christmas Tree Syndrome"

If you experience a runny nose, sneezing, itchy eyes, coughing, or wheezing after setting up a Christmas tree, it might not be a cold but "Christmas Tree Syndrome." Live trees can bring in pollen and mold, and when warmed indoors, mold spores can increase. Research has shown that indoor spore counts can rise from about 800 spores/m³ to 5,000 spores/m³ over two weeks. Those with asthma, COPD, or allergies should be cautious. Countermeasures include choosing the type of tree, washing and drying it outdoors, ventilation and dehumidification, wearing gloves, early removal, and cleaning and sealing artificial trees for storage.