Allergies
Allergies are caused by an immune response in the body to a substance in your environment. Getting the right diagnosis and treatment for your allergies is key — and can help you feel better faster.
Explore allergy care
Causes
Understand the underlying causes behind allergies, and causes of symptom flare ups or allergic reactions.
Definition
Read up on basic terms, procedures, conditions, and clinical definitions about allergies.
Diagnosis
Getting allergies diagnosed is an important part of managing them. Learn more about allergy diagnosis here.
Management
Allergy management is an essential part of living with allergies. Explore resources here.
Related Conditions
Related health conditions like rashes or hay fever can arise from chronic health conditions caused by allergies.
Symptoms
Educational content and resources for understanding symptoms of allergies, and how to treat them.
Treatment
Most allergies can't be cured, but treatments of chronic allergies can greatly help improve symptoms.
Types
Review allergic diseases like hay fever (allergic rhinitis), eczema, hives, asthma, and food allergies.
Featured

Causes
Allergens: Pollen
Pollen is microscopic in size. It is the most common cause of hay fever (seasonal allergic rhinitis).
Treatment
Treatment for Allergy
The most effective ways to treat allergies are staying away from your triggers, getting allergy immunotherapy, and taking other medicine as directed by your healthcare provider.

Allergy basics
Test your knowledge
Food Allergy Quiz
Do you or does someone in your family have a food allergy? Take this quiz and learn how to better cope with this condition.
Take the quizSeasonal Allergy Quiz
For people with seasonal allergies, Spring can be a time of sniffles and sneezes. Quiz your seasonal allergies knowledge.
Take the quizMold Allergy Quiz
Molds are microscopic fungi that are everywhere in our environment. Learn about mold allergy by taking this quiz.
Take the quiz