Fruit Allergy Information — Allergy Knowledge

A row of fresh citrus fruits and berries, including a halved orange, on a wooden table with soft window light.

What Is a Fruit Allergy?

Fruit allergies occur when the immune system mistakenly identifies proteins in certain fruits as harmful. Reactions can range from mild itching or tingling in the mouth to more serious symptoms. Fruit allergy is frequently observed as local reactions in the oral cavity — a condition known as oral allergy syndrome (OAS).

Oral allergy syndrome often affects people who already have pollen allergies, such as hay fever. The proteins in some raw fruits and vegetables closely resemble pollen proteins, causing cross-reactivity. Cooking or peeling the fruit can sometimes reduce or eliminate the reaction.

Common Symptoms

Symptoms of a fruit allergy may include itching or swelling of the lips, tongue, throat, or roof of the mouth. Some individuals experience hives, stomach discomfort, or in rare cases, anaphylaxis. Because reactions vary widely, it is important to consult a healthcare professional for proper evaluation and guidance.

Articles on Fruit Allergies

Browse our collection of articles covering various fruit-related allergic reactions, their causes, symptoms, and practical management strategies.

Fresh citrus fruits and berries on a wooden table with soft window light.

Oral Allergy Syndrome & Fruit

Learn how pollen cross-reactivity triggers oral allergy syndrome when eating raw fruits.

Fresh celery stalks with leafy tops on a white background, pale green and white.

Celery Allergy

Symptoms, causes, and treatment options for celery allergy — a lesser-known but significant food allergen.

A halved orange and fresh berries on a wooden table with natural light.

Orange Juice Allergy

Can orange juice trigger allergic reactions? Explore symptoms and what to watch for.