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Allergies or Sinus Infection? How to Tell the Difference

Do you have a stuffy nose, facial pressure, or constant sneezing and aren’t sure whether it’s due to allergies or a sinus infection? You’re not alone. These two conditions often look alike, but understanding the differences is key to effective treatment and long-term relief.

What Are Allergies?

Allergies occur when your immune system overreacts to harmless substances like pollen, dust mites, mold, or pet dander. Your body releases histamines, leading to symptoms commonly associated with allergic rhinitis (hay fever).

Common Allergy Symptoms:

  • Sneezing

  • Itchy nose, eyes, or throat

  • Runny or congested nose (usually clear discharge)

  • Watery, red, or swollen eyes

  • Postnasal drip

  • Symptoms worsen in certain seasons or environments

What Is a Sinus Infection (Sinusitis)?

A sinus infection happens when your nasal cavities become inflamed due to viruses, bacteria, or fungi. It often follows a cold, flu, or untreated allergies.

Common Sinus Infection Symptoms:

  • Facial pain or pressure (especially around the eyes, cheeks, or forehead)

  • Thick yellow or green nasal discharge

  • Nasal congestion

  • Headache

  • Bad breath

  • Fever

  • Fatigue

  • Symptoms often start after a cold and can last more than 10 days

 

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