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Seasonal allergies or something more? When symptoms need medical care

Learn how to tell the difference between seasonal allergies and more serious symptoms, including when breathing problems, swelling or fever mean it is time to seek medical care.

June 01, 2026
A smiling child sits on an adult’s shoulders, reaching toward spring blossoms on a tree branch in a sunny park.
Seasonal allergies are common in spring, especially when outdoor pollen levels rise during family activities and time spent outside.

Seasonal allergies are common in the spring and early summer, affecting millions of people each year. Sneezing, congestion, itchy eyes and sinus pressure are often blamed on pollen and other allergens. While many allergy symptoms are mild, some may signal a more serious condition that needs medical attention. Understanding the difference can help you choose when to manage your symptoms at home or seek outside care.

Why seasonal allergies are so common

Seasonal allergies occur when your immune system reacts to airborne allergens such as pollen from trees, grasses and weeds. According to the Centers for Disease Control and Prevention (CDC), allergies are among the most common chronic conditions in the United States.

Common seasonal allergy symptoms

If you're sneezing, have a runny/stuffy nose, itchy or watery eyes, sinus pressure, postnasal drip or coughing, it may be allergies. These symptoms often improve with supplements and/or medications, along with you avoiding triggers.

How allergies can affect breathing for some people

Allergies may trigger wheezing, shortness of breath and tightness in the chest — especially in those with asthma. Allergy triggers are a common cause of asthma flare-ups, according to the CDC.

Allergies versus cold, flu or asthma

Viral illnesses often cause fever, body aches and thick nasal discharge, which differs from common allergies. Asthma-related symptoms may lead to breathing difficulty that worsens with exposure to allergens.

Pay attention to warning signs

Seek immediate medical care if your allergy symptoms include:

  • Difficulty breathing or wheezing
  • Chest tightness or pain
  • Swelling of the face, lips, or throat
  • Fever or severe fatigue
  • Symptoms that worsen quickly or do not improve with treatment

When to see a doctor versus go to the ER

Mild allergy symptoms can often be managed with over-the-counter medications and avoidance strategies. However, seek urgent or emergency care if symptoms affect breathing, cause swelling, or feel severe or sudden.

Managing seasonal allergies and getting care

Managing allergies may include limiting outdoor exposure during high pollen days, showering after being outside, using allergy medications as directed and following an asthma action plan when applicable.

If allergy symptoms affect breathing or quality of life, your healthcare team can help determine the cause and recommend appropriate treatment or testing.

Published:
June 01, 2026

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