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Topic Index

Allergy

Asthma

Immune Disorders

Glossary

Allergy and asthma are among the most common heath problems, with many people affected with asthma, seasonal hay fever, or other allergy-related conditions each year.

Picture of young boy sitting in a field of wild flowers

Allergies can affect anyone. Generally, allergies are more common in children; however, a first-time occurrence can happen at any age, or recur after many years of remission.

Allergies tend to occur in families, although the exact genetic factors that cause it are not yet understood.