As spring approaches, allergy experts are warning that rising temperatures and longer days will bring increased tree pollen, a common trigger for seasonal allergies. According to Cherie Zachary, MD, president of the American College of Allergy, Asthma and Immunology (ACAAI), not everyone will be affected in the same way.
“It’s important to remember that high pollen counts don’t always translate to symptoms for every person,” said Dr. Zachary. “Your symptoms depend on which specific pollens you’re allergic to. If you are allergic to tree pollen, you may feel miserable, while someone allergic only to grasses may not yet notice any problems.”
Tree pollen is already emerging in warmer regions of the United States, making early March a key time for those with sensitivities to start preventive treatment. “People with tree pollen allergies should start taking their allergy medications at least a month before their symptoms typically appear,” Dr. Zachary advised. “Starting early helps prevent the immune system from mounting a full-blown response once pollen levels rise.”
Experts note that climate change is causing milder winters and earlier warm spells in some areas, which can lead to an earlier start of allergy season than usual. Early springs mean trees begin pollinating sooner, leading people with spring allergies to experience symptoms ahead of schedule.
Common spring allergy symptoms include sneezing, nasal congestion, itchy eyes, wheezing, coughing and fatigue. Many people rely on over-the-counter antihistamines or nasal sprays for relief. “It’s important to treat your allergies according to your symptoms,” said Dr. Zachary. “If over-the-counter medications aren’t adequately controlling your symptoms, it’s time to see an allergist.” Board-certified allergists can create personalized treatment plans that may include prescription medications or long-term strategies.
For lasting symptom control, allergen immunotherapy—such as shots or tablets—may help by training the immune system to tolerate allergens over time. This approach aims to reduce reliance on medication and improve quality of life for patients with severe allergies or asthma.
Allergists recommend keeping windows closed during peak pollen times at home and in cars since open windows allow pollen indoors and can worsen symptoms. Using air conditioning and high-efficiency filters helps maintain cleaner indoor air. Showering and changing clothes after outdoor activities also reduces indoor pollen exposure.
“With the right strategy, people with allergies don’t have to dread spring,” said Dr. Zachary. “Early treatment, environmental precautions, and guidance from an allergist can help keep symptoms under control so you can enjoy the season.”
The ACAAI provides resources for diagnosing and managing allergies year-round through its website AllergyAndAsthmaRelief.org.
Founded in 1942, the American College of Allergy, Asthma and Immunology is a professional medical organization focused on advancing knowledge in allergy care through education and research support. The group also offers educational materials for patients and publishes a peer-reviewed journal on related topics (source). The ACAAI continues its mission by supporting patient care initiatives and providing up-to-date information about allergy treatments (source).
