Allergy facts

Allergy facts

• Allergy involves an exaggerated response of the immune system.
• The immune system is the body's organized defense mechanism against foreign invaders, particularly infections.
• Allergens are substances that are foreign to the body and can cause an allergic reaction.
• IgE is the allergy antibody.
• Allergies can develop at any age.
• Your risk of developing allergies is related to your parents' allergy history.

Introduction

In this review you will learn how allergy relates to the immune system. You will begin understanding how and why certain people become allergic. The most common allergic diseases are discussed briefly in this article