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  • Allergies
  • Overview
    • The Basics
    • Complications
  • Symptoms & Types
    • Seasonal & Pet Allergies
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    • Chronic Sinusitis With Nasal Polyps
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Overview

When you have allergies, it means your immune system reacts to something that’s usually harmless. Learn more.

  1. The Basics

    1. What Is an Allergy?
    2. Who Gets Allergies?
    3. What Causes an Allergic Reaction?

  2. Complications

    1. Allergies and Asthma
    2. Allergies and Sinusitis
    3. What Happens in Anaphylaxis?
    4. Nasal Polyps
    5. Dupixent for Chronic Rhinosinusitis With Nasal Polyps

More on Allergies

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