Allergy

Definition

An allergy is an immune system reaction to a substance that is typically harmless to most people, such as a food, pollen, or dust.

Scientific / Technical Definition

An allergy is a hypersensitivity disorder of the immune system. Allergic reactions occur when a person's immune system reacts to normally harmless substances in the environment. These substances are known as allergens and may include foods, drugs, or environmental factors like pollen.

Benefits

• Awareness and understanding of allergies can help in managing and preventing severe allergic reactions.
• Proper identification and avoidance of allergens can lead to an improved quality of life for individuals with allergies.

Examples

• Common food allergens: peanuts, shellfish, eggs, milk.
• Environmental allergens: pollen, pet dander, dust mites.

Additional Information

• Known issues: Severe allergic reactions can lead to anaphylaxis, which is a life-threatening condition requiring immediate medical attention.
• Side effects: Common symptoms of allergies include itching, sneezing, rashes, and in some cases, difficulty breathing.

Related Terms

• Food Allergy
• Food Intolerances
• Anaphylaxis
• Immune System

References

• Understanding Food Allergies
• Allergy Overview