Fruit Allergy: Pineapple, Apples, Kiwi, Avocado and Others

Fruit allergy is a special case of food allergy: the immune system mistakenly recognizes the proteins of the fruit as dangerous. Below — about reactions to apples, kiwi, pineapple, bananas, avocado, mango and pomegranate, about symptoms and about the examinations a doctor prescribes.

Which fruits most often cause allergies

Fruits are not on the lists of the most common food allergens: those lists include cow's milk, eggs, wheat, soy, peanuts, nuts, fish and seafood, and in Europe also sesame, lupin, celery, mustard and sulfites. Allergy is nevertheless possible to any product, and fruits are no exception.

The typical form of reaction to them is oral allergy syndrome, also known as pollen-food syndrome: after raw fruits, vegetables or nuts the mouth and throat itch. Usually this is not dangerous, and well-cooked fruits and vegetables help.

The prevalence of food allergy is 1.5–2% in adults and about 6% in children. There are noticeably more people who are certain of their allergy, hence unnecessary dietary restrictions.

Why allergy to apples, kiwi and pineapple occurs

The mechanism is common: immunoglobulin E binds to food molecules, histamine is released, and inflammation develops.

Kiwi is not on the mandatory lists of common allergens, but it can be an allergen, like any product.

The severity depends on the amount eaten, and each episode in the same person may look different.

Bananas, avocado, mango and pomegranate: allergy is possible to more than one product

A person with food allergy may be allergic to more than one product, so a reaction to bananas does not rule out a reaction to avocado or mango. Hay fever, asthma and eczema increase the risk of food allergy.

Pomegranate, mango and avocado are not listed among common allergens — this is an answer about frequency, not about the impossibility of a reaction. Heredity also matters: the risk is higher if relatives have allergy, asthma or eczema.

How fruit allergy manifests in adults and children

Symptoms affect any part of the body and often arise in several places at once.

• Hives, redness of the skin, itching.
• Tingling or itching in the mouth, swelling of the face, tongue and lips.
• Nausea, vomiting, diarrhea, abdominal pain.
• Cough, wheezing, difficulty breathing, dizziness.

The reaction usually begins within a few minutes — up to two hours after eating, sometimes later, up to several days. Both children and adults can have food allergy: some children outgrow it, and in adults it sometimes appears for the first time.

Food intolerance is a different condition: bloating and abdominal pain after several hours without involvement of the immune system.

How food allergy to fruits is diagnosed

The doctor asks about symptoms and history, including other allergies, and examines the patient. Then skin tests, blood tests for food antibodies, a diagnostic elimination diet and a food diary may follow; the most accurate method is an oral provocation test in a medical facility.

The results are interpreted by the doctor, comparing them with the medical history: a laboratory report by itself is not a diagnosis.

When urgent medical help is needed

Most symptoms are not dangerous, but in some people the reaction is severe. A routine reason to see a doctor is suspected allergy in oneself or in a child.

Redness of the skin by itself is not a reason to call an ambulance; 103 or 112 are needed if after a fruit the lips, mouth, throat or tongue suddenly swell, breathing becomes rapid or difficult, wheezing or a feeling of suffocation appears, the throat tightens and swallowing is difficult, the skin, tongue or lips turn blue, gray or pale, the person suddenly becomes confused, drowsy or loses consciousness, the child goes limp and does not respond as usual.

Anaphylaxis is a rare complication: the airways narrow, blood pressure drops, and loss of consciousness is possible. Such a condition may require emergency treatment in a hospital.

This material is for reference: it explains how the problem works but does not replace consultation with a doctor who sees the individual patient.

This content is for reference and does not replace a doctor's consultation. Medical disclaimer