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  • Allergies
  • Overview
    • The Basics
    • Complications
  • Symptoms & Types
    • Seasonal & Pet Allergies
    • Food Allergies
    • Skin Allergies
    • Other Allergies
  • Tests & Diagnosis
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  • Appointment Prep
    • Chronic Sinusitis With Nasal Polyps
    • Food Allergies
  • View Full Guide

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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Essential Facts You Need to Know About Allergies

Why Aren’t Your Allergies Improving?

Best Treatments for Allergies

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