Cherry allergy: tips for diagnosis, treatment and prevention

18 Jul 2024
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Can you be allergic to cherries?

Yes, it is possible to be allergic to cherries. This type of food allergy, while not as common as others, can cause a range of symptoms from mild to severe. Cherry allergy is often associated with a condition known as oral allergy syndrome.

Cherry allergy can be primary or secondary. Primary cherry allergy occurs when the immune system reacts directly to the proteins in the cherry itself. Secondary cherry allergy, on the other hand, is a cross-reactivity phenomenon. It occurs when the immune system mistakes similar proteins found in cherries for those found in certain pollens, such as birch or grass pollen.

People with a cherry allergy can experience symptoms ranging from itching or swelling in the mouth and throat, to hives, and even severe reactions such as breathing difficulties or anaphylaxis. It is important to note that the severity of symptoms can vary from person to person and even from one episode to another in the same individual.

Interestingly, some people may only be allergic to raw cherries and not to cooked ones. This is because the heat from cooking can denature the proteins that cause the allergic reaction, making them non-reactive. However, this is not always the case, and some individuals may still react to cooked cherries.

Finally, people with a cherry allergy may also react to other fruits and nuts due to cross-reactivity. This is known as the pollen-fruit syndrome. Common cross-reactive foods include apples, peaches, plums, nectarines, and almonds. It is essential to be aware of these potential triggers to effectively manage the allergy.

If you suspect that you or a loved one may have a cherry allergy, consult a doctor for proper diagnosis and treatment.

What is a food allergy?

A food allergy is an overactive immune response to certain proteins found in foods. The immune system mistakes these proteins as harmful invaders, triggering various symptoms. It is not limited to just a few foods like cherries; potential allergens are found in various types of food.

Food allergies can manifest in different ways. Some people may experience mild symptoms like itching or hives, while others may suffer from severe reactions such as anaphylaxis, a life-threatening condition requiring immediate attention. Common symptoms can include itching or swelling in the mouth, stomach pain, diarrhea, rashes, and difficulty breathing.

Some foods are more likely to cause allergies than others. In adults, common food allergens include shellfish, peanuts, tree nuts, fish, and wheat. Children are often allergic to milk, eggs, peanuts, tree nuts, soy, and wheat. However, any food can potentially cause an allergic reaction.

It is important to note that food allergies are different from food intolerances. Although symptoms can sometimes overlap, food intolerance is generally less severe and does not involve the immune system. For example, lactose intolerance is due to the body's inability to digest lactose, not an allergic reaction to it.

In the context of our discussion on cherry allergies, it is crucial to remember that having a cherry allergy means the immune system overreacts to the proteins in cherries. Similarly to how tree pollen allergies work, the body views these proteins as a threat and triggers an immune response. If you suspect you have a food allergy, it is essential to consult a doctor for accurate diagnosis and treatment.

What is the difference between primary and secondary cherry allergy?

Primary and secondary cherry allergies refer to two distinct types of allergic reactions to cherries. The main difference lies in the allergen that triggers the response: in primary cherry allergy, the immune system reacts to the proteins in the cherry itself, while in secondary cherry allergy, the reaction is to proteins similar to those found in tree pollen.

Primary cherry allergy

In primary cherry allergy, the immune system identifies the proteins in cherries as harmful, triggering an allergic reaction. This reaction is not linked to other allergies and is caused by direct sensitivity to cherries. Symptoms can range from mild, such as itching or hives, to severe, leading to anaphylaxis. As with any food allergy, those who suspect they have a primary cherry allergy should consult a doctor for diagnosis and treatment options.

Secondary cherry allergy

Secondary cherry allergy, also known as oral allergy syndrome (OAS), occurs when the immune system confuses the proteins in cherries with those found in certain tree pollens. As a result, individuals allergic to trees like alder, beech, or pecan may also react to cherries.

The symptoms usually involve the mouth and throat, such as itching, swelling, and allergic reactions on the lips. Because these symptoms are typically mild and subside quickly, secondary cherry allergies are often less severe than primary ones.

What are the symptoms of cherry allergy?

The symptoms of cherry allergy vary in severity and can affect different parts of the body. They usually appear shortly after consuming the fruit, particularly in the case of OAS if it is a secondary cherry allergy.

Common symptoms include itching or tingling in the mouth and throat, which is a hallmark of OAS. More severe reactions can cause hives, swelling of the lips, face, tongue, or throat, and difficulty breathing. In rare cases, a cherry allergy can cause anaphylaxis, a life-threatening reaction that requires immediate medical attention.

Other symptoms of cherry allergy can include stomach pain, nausea, vomiting, or diarrhea. It is essential to seek medical help if you experience symptoms after eating cherries, especially if an allergic reaction is suspected. Only a healthcare professional can provide an accurate diagnosis and recommend the best treatment and management options for the allergy.

How is cherry allergy diagnosed and treated?

Cherry allergy is diagnosed through a combination of medical history, physical examinations, and allergy tests. If you suspect a cherry allergy, your doctor will ask detailed questions about your symptoms and medical history. They may also request a food diary to track what you eat and when symptoms occur.

Allergy tests can include skin tests or blood tests to identify the presence of specific antibodies that react to cherries. In a skin test, a small amount of allergen is applied to the skin and observed for a reaction. If a skin reaction occurs, such as redness or swelling, you may be allergic to cherries. Blood tests, such as enzyme-linked immunosorbent assay (ELISA) or radioallergosorbent test (RAST), measure the levels of specific antibodies in the blood in response to cherry allergens.

Treating cherry allergy primarily involves avoiding cherries and cherry-based products. It is important to read food labels carefully and inquire about ingredients when dining out. For mild allergic reactions, your doctor may recommend antihistamines to relieve symptoms.

For severe allergic reactions, such as anaphylaxis, an epinephrine auto-injector may be necessary. People with a known cherry allergy should always carry an epinephrine auto-injector and know how to use it correctly. It is also helpful to inform friends, family, and coworkers about your allergy, so they know how to assist in an emergency.

Source: Wyndly
Image: Very well Health


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