Can Seasonal Allergies Cause Flu-Like Symptoms?

March 7, 2024

As the seasons change and pollen begins to fill the air, many individuals find themselves battling the symptoms of seasonal allergies. Sneezing, itchy eyes, and a runny nose are common complaints during allergy season. However, for some people, certain symptoms of allergies can sometimes mimic those of the flu, leading to confusion and concern. In this blog, we’ll explore whether seasonal allergies can cause flu-like symptoms and how you can distinguish between the two.

For same-day seasonal care, visit the walk-in clinic at AFC Urgent Care Denver University Hills. Our urgent care center provides preventative and immediate care for all patients in the Denver, CO area and surrounding communities. Just walk-in or pre-register your visit below.


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Understanding Seasonal Allergies 

Seasonal allergies occur when the immune system overreacts to allergens such as pollen, mold spores, pet dander, or grass. When exposed to these allergens, the body releases histamines, and other chemicals, which can trigger a range of symptoms. The symptoms of allergies typically occur shortly after exposure to the allergen that triggers them and may persist for days or weeks depending on the duration of allergen exposure.

The most common symptoms of allergies include:

  • Sneezing
  • Runny or Stuffy Nose
  • Itchy or Watery Eyes
  • Coughing
  • Postnasal Drip
  • Fatigue 

The Connection Between Allergies and Flu-Like Symptoms 

While seasonal allergies primarily affect the respiratory system, they can also sometimes cause symptoms that resemble those of the flu. For example, allergies can cause a moderate level of fatigue, leaving you feeling tired and run down. This is a similar symptom that develops during illnesses like the flu. Additionally, some individuals with allergies may experience generalized body aches or muscle soreness, similar to the flu. Other shared symptoms include headaches, nasal congestion, and a sore throat.

While the symptoms of seasonal allergies and the flu can overlap, there are some key differences that can help you distinguish between the two. Fever is a hallmark symptom of the flu but it’s not typically associated with seasonal allergies. If you have a high-grade fever, it’s likely you have the flu. Furthermore, allergy symptoms tend to be persistent and can last for an entire allergy season. In contrast, the flu usually resolves within a week or two. 

When To Seek Medical Attention 

Seasonal allergies can be challenging to manage. While many cases can be managed with over-the-counter medications and lifestyle changes, there are instances when seeking medical attention at an urgent care center is advised. If your symptoms are severe and persistent, it’s essential to consult a healthcare provider for a full medical evaluation and treatment plan. Your provider can examine your symptoms, diagnose your condition as allergies or something else, and offer further guidance on how to manage and alleviate symptoms. Seasonal allergies can be treated with certain medications that provide relief, like antihistamines, decongestants, or eye drops. If you experience worsening or persistent allergy symptoms, or signs of a flu infection, it’s important to seek medical attention and recommended treatment options.

Get Same-Day Seasonal Care at AFC Urgent Care Denver University Hills

While seasonal allergies can cause symptoms that resemble those of the flu, there are key differences between the two conditions that require different treatment approaches. Understanding these differences can help you determine whether your symptoms are due to allergies or the influenza virus. If you’re experiencing any concerning symptoms, come visit the walk-in clinic at AFC Urgent Care Denver University Hills. Our medical team is here to support your health and wellness seven days a week, no appointment necessary. With proper management, you can effectively alleviate your allergy symptoms and minimize their impact on your daily life. If you have any additional questions about the services we provide, please contact our medical office directly at (303) 756-4500.

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