United States: The severity of seasonal allergy symptoms grows worse in the Palmetto State while possible changes to weather patterns contribute to extended and aggravated pollen seasons.
The Asthma and Allergy Foundation of America positions Greenville South Carolina at position 9 in their 2025 Allergy Capitals report for their listing of the worst USA cities for allergy patients, as reported by Live5News.
What’s Causing the Allergy Spike?
Every year grass and weeds and trees eject substantial pollen into the air which creates far-reaching pollen haze to worsen allergy reactions.
According to Dr. Kelli Williams of the Medical University of South Carolina birch and oak trees with pine trees represent the main pollen sources throughout the Southeastern and Lowcountry areas.
Pollen particles vary in size, which determines how they affect the body:
✔ Smaller particles can cause respiratory symptoms
✔ Larger pollen grains often trigger nasal congestion and sneezing
“This pollen really affects people differently,” explains Dr. Williams. “Some experience respiratory symptoms, while others have more nasal reactions.”
How Weather Impacts Pollen Release
This year’s cold winter, including an ice storm in January and a February freeze, may have intensified pollen buildup, leading to a massive pollen release as soon as warm temperatures arrived.
“When trees prepare to release pollen, they store up reserves,” Dr. Williams explains. “After a cold snap, when warm weather hits, they release it all at once, making allergy season worse.”
Reducing Pollen Exposure & Managing Symptoms
To minimize daily pollen exposure, Dr. Williams suggests:
✅ Keep windows closed to prevent pollen from entering your home
✅ Wash your car frequently to remove pollen buildup
✅ Wear a hat to keep pollen out of your hair
✅ Avoid touching your eyes to reduce irritation
The treatment of seasonal allergic symptoms requires common drug store antihistamines which combat eye itch and sneezing as well as nasal congestion. Treatment for seasonal allergies requires both recommended medications combined with daily intranasal corticosteroid sprays as part of the regimen.