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Allergy Glossary

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Allergen
Substance that causes an allergic reaction
Allergenic
describes a substance which produces an allergic reaction
Antibody
Molecule tailor-made by the immune system to lock onto and destroy specific germs
Basophils
White blood cells that contribute to inflammatory reactions
Conjunctivitis
Inflammation of the lining of the eyelid, causing red-rimmed, swollen eyes, and crusting of the eyelids
Genes
Units of genetic material that carry the directions a cell uses to perform a specific function
Granules
Small particles; in cells the particles typically include enzymes and other chemicals
Immune System
A complex network of specialized cells, tissues, and organs that defends the body against attacks by disease-causing organisms
Inflammation
An immune system process that stops the progression of disease-causing organisms
Lymphocytes
Small white blood cells which are important parts of the immune system
Mast Cells
Granule-containing cells found in tissue
Molecules
The building blocks of a cell. Some examples are proteins, fats, and carbohydrates
Organism
an individual living thing
Perennial
Describes something that occurs throughout the year
Rhinitis
Inflammation of the nasal passages, which can cause a runny nose
Sinuses
Hollow air spaces located within the bones of the skull surrounding the nose
Sputum
Matter ejected from the lungs and windpipe through the mouth
Tissues
Groups of similar cells joined to perform the same function
Upper Respiratory Tract
Area of the body which includes the nasal passages, mouth, and throat

Learn more information about allergies by type, and methods to prevent and treat them.

Allergies: Did You Know

The respiratory symptoms of asthma, which affect approximately 11 million Americans, are often provoked by airborne allergens.

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