What is Food Allergy?

Food Allergy is an abnormal immune response that occurs when the body mistakenly identifies a specific food protein as harmful, triggering the release of chemicals like histamine that cause allergic symptoms. Reactions can range from mild, such as hives or stomach upset, to severe and life-threatening, such as anaphylaxis, and typically occur within minutes to a couple of hours after consuming the trigger food. Common culprits include peanuts, tree nuts, milk, eggs, shellfish, wheat, and soy, though any food can potentially trigger an allergic reaction. Unlike food intolerance, food allergies involve the immune system and can be life-threatening even from trace exposure.

What are the main symptoms of Food Allergy?

The most common symptoms include: Hives or itchy skin rash; swelling of lips; face; or throat. Early recognition is key to prompt diagnosis and effective treatment.

Is Food Allergy contagious?

No, Food Allergy is not contagious. It cannot spread through casual contact. However, certain risk factors and genetic predispositions may increase susceptibility.

How is Food Allergy treated?

Treatment options include: Strict avoidance of the trigger food is the primary approach to preventing allergic reactions; with antihistamines used to manage mild symptoms when accidental exposure occurs. Individuals at risk of severe reactions must carry injectable epinephrine at all times for emergency treatment of anaphylaxis; and emerging oral immunotherapy is being used to gradually build tolerance in select cases.. Treatment should always be guided by a qualified Allergy & Immunology specialist. Do not self-medicate.

Can Food Allergy be prevented?

While Food Allergy cannot always be fully prevented, several measures can reduce risk: Careful reading of food labels to avoid trigger allergens; informing restaurants and caregivers of allergies; carrying emergency epinephrine if prescribed.

When should I see a doctor for Food Allergy?

Consult a Allergy & Immunology specialist if symptoms persist for more than a few days, worsen despite home care, or significantly affect your daily activities. Early diagnosis leads to better outcomes.

All Diseases/Food Allergy

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Allergic & ImmunologicModerate

Food Allergy

Allergy & Immunology · Allergic & Immunologic

Moderate

Severity

Common — affects about 6-8% of children and 4% of adults

Prevalence

Contagious

Allergy & Immunology

Specialist

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🛡️Prevention of Food Allergy

1Careful reading of food labels to avoid trigger allergens
2informing restaurants and caregivers of allergies
3carrying emergency epinephrine if prescribed
4early introduction of allergenic foods in infancy under medical guidance
5wearing a medical alert bracelet

More About Food Allergy

About the Food Allergy Warning Signs of Food Allergy Common Symptoms of Food Allergy Causes & Risk Factors of Food Allergy How Doctors Diagnose Food Allergy Treatment Options for Food Allergy Food Allergy Progression Food Allergy Treatment Cost Frequently Asked Questions About Food Allergy Ask a Question About Food Allergy Conditions Related to Food Allergy

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