Celery Allergy

Celery Allergy Guide: Symptoms, Causes, Diagnosis and Treatment

Overview

Celery allergy occurs when the immune system reacts to proteins found in celery. Reactions can range from mild symptoms such as itching or stomach discomfort to severe allergic reactions including anaphylaxis.

Celery can be consumed in many forms including raw celery stalks, celery leaves, celery root (also called celeriac), and celery seeds. Celery seeds are commonly used as a spice in soups, sauces, seasoning mixes, and processed foods.

Celery allergy is more commonly reported in Europe than in some other parts of the world and is recognised as one of the major food allergens that must be clearly labelled on packaged foods in many countries.

In some individuals, celery allergy can occur alongside pollen allergies as part of pollen–food allergy syndrome, where proteins in certain foods resemble pollen allergens.

Symptoms

Some people may experience symptoms shortly after eating celery, while others may develop symptoms when celery is eaten raw but tolerate cooked celery.

Diagnosis

If a celery allergy is suspected, a doctor or healthcare professional may refer you to an allergy specialist for further assessment. Diagnosis usually begins with a detailed medical history, including the symptoms experienced and foods eaten before the reaction.

Testing may include:

• Skin prick tests or blood tests to detect allergic antibodies
• Oral food challenge tests carried out under medical supervision
• Assessment of possible cross-reactions with pollen allergies

An allergy specialist will interpret test results alongside medical history, as tests alone do not always confirm a true food allergy.

Living with Celery Allergy

• Shopping: Celery must be clearly labelled on food packaging in many countries. Always read ingredient labels carefully, even on products you buy regularly, as recipes and manufacturing processes can change.
• Eating out: Tell restaurant staff about your celery allergy and ask how dishes are prepared. Celery may be used in soups, stews, stocks, sauces, salads, seasoning mixes, and processed foods.
• Cross-contact: Cross-contact can occur if foods are prepared using the same equipment or surfaces as celery-containing foods.
• Hidden sources: Celery seeds and celery salt are commonly used in spice blends and flavourings. Celery root (celeriac) is also used in soups, mash, and salads.

Emergency Action

Mild allergic symptoms can often be treated with an antihistamine.

However, if there are signs of a severe allergic reaction — such as difficulty breathing, swelling of the throat or tongue, wheezing, sudden dizziness, or collapse — this is a medical emergency. Call your local emergency number immediately and use an adrenaline auto-injector if one has been prescribed.

Adrenaline auto-injectors commonly prescribed include:

• EpiPen® (adult and junior doses)
• Jext® (adult and junior doses)
• Auvi-Q® (available in some countries)

People at risk of severe allergic reactions are usually advised to carry two auto-injectors at all times, in case a second dose is needed.

After using an adrenaline auto-injector, medical attention is still required, as symptoms can return.

Friends, family members, teachers, and carers should know where the devices are kept and how to use them. Training devices and demonstration videos are available from the manufacturers’ websites.

Outgrowing Celery Allergy

Celery allergy can persist into adulthood, although some individuals may experience changes in their sensitivity over time.

Regular follow-up with an allergy specialist can help determine whether the allergy is still present and whether certain forms of celery may be tolerated.

Future Treatments

Research into new treatments for food allergies is ongoing. Some emerging approaches include:

Oral immunotherapy (OIT) – gradually introducing very small amounts of the allergen under medical supervision to help build tolerance.

Epicutaneous immunotherapy – skin patch treatments designed to slowly desensitise the immune system.

New medicines and biological therapies – researchers are studying treatments that may help reduce the severity of allergic reactions.

Many of these treatments are still being studied and may not be suitable for everyone.

For now, the safest approach remains avoiding trigger foods, checking ingredient labels carefully, and carrying emergency medication if prescribed.

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When to Seek Medical Advice

Speak to a doctor or healthcare professional if you think you or your child may have a food allergy. Symptoms such as hives, swelling, stomach pain, vomiting, or breathing problems after eating certain foods should always be assessed by a medical professional.

Urgent medical attention is needed if symptoms of a severe allergic reaction (anaphylaxis) occur, including difficulty breathing, swelling of the throat or tongue, wheezing, dizziness, or collapse.

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Resources

• NHS – Food Allergy Guidance
• Allergy UK
• British Society for Allergy & Clinical Immunology (BSACI)

These organisations provide trusted information, advice, and support for people living with allergies.

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Medical Disclaimer

This guide is provided for general information only and is not a substitute for professional medical advice, diagnosis, or treatment.

Always seek advice from your doctor, allergy specialist, or another qualified healthcare professional if you have concerns about allergies, symptoms, or treatment.

If you believe you or someone else may be experiencing a severe allergic reaction (anaphylaxis), seek emergency medical assistance immediately.

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