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- Allergies - Symptoms and causes - Mayo Clinic
Allergies happen when the immune system reacts to a foreign substance that gets inside the body These substances are known as allergens They include pollen, bee venom and pet dander Allergies also can happen due to certain foods and medicines that don't cause reactions in most people
- Allergies: Types, Symptoms, Treatment Management
Allergies happen when your immune system overreacts to something that’s usually not harmful — like pollen, pet dander and certain foods Symptoms can include everything from sneezing and a runny nose to vomiting and difficulty breathing
- Allergy Symptoms: Signs, Symptoms, and Treatment - WebMD
Learn about different types of allergies, allergic reactions, their types, symptoms, and severity
- Allergies Overview: Symptoms, Treatments, and More - Healthline
An allergy is an immune system response to a foreign substance that’s not typically harmful to your body Learn more about the types, causes, and symptoms of allergies, and how they're treated
- What Are Allergies? Symptoms, Causes, Diagnosis, Treatment, and Prevention
Allergies are when the immune system recognizes foreign substances called allergens inside the body and attempts to fight them off Allergens can include pollen, bee venom, and pet dander
- Is allergy season worse this year? What to know, how to get relief
How to tell the difference between a cold and allergies The common cold and seasonal allergies share similar symptoms, such as congestion, coughing, sneezing, a headache, or fatigue, but there are differences, too
- Allergies | Allergy Symptoms | MedlinePlus
Find the full list of allergies and symptoms
- Allergies: Causes, diagnosis, and treatment - Medical News Today
An allergy develops when the immune system becomes hypersensitive to a food or other substance Learn how to identify and manage allergies here
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