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Allergy Testing and Immunotherapy in Los Angeles, California

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Price: 49.0 USD
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In Los Angeles, California, allergens like ragweed, dust mites, and mold are common. Allergy immunotherapy can help build resistance against these allergens, providing relief from allergy symptoms and improving quality of life.

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Onion Allergy: Signs, Diagnosis & Treatment

Explore Onions Allergy symptoms, diagnosis, treatment, and dietary tips. Uncover onion growth data across the USA and foods to avoid.

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50,000+
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Reviewed by Curex clinical team

Dr. Chet Tharpe, M.D..

Updated May 3, 2025

Key Symptoms of Onions Allergy

1. Skin Reactions

One of the common symptoms of onion allergy is skin reactions. This may include rashes, redness, and swelling, particularly in areas that have come into contact with the onion or its juice.

2. Respiratory Disturbances

Some people may experience respiratory disturbances like coughing, wheezing, or difficulty in breathing after consuming or inhaling the substance from onions. This symptom can be severe in some cases, leading to a life-threatening situation known as anaphylaxis.

3. Digestive Issues

Many people with an onion allergy may also experience digestive issues such as bloating, stomach pain, and diarrhea. These can be a direct reaction to eating onions, even if it is in small quantities.

4. Facial Swelling

Swelling of the lips, tongue, and throat is another common symptom of an onion allergy. It may also spread to other areas of the face and cause puffiness or a swollen appearance.

5. Itchy Eyes

Onion allergies can also cause itchy, watery eyes. This is particularly common when the onions are being chopped and the juice becomes airborne.

6. Nasal Discomfort

Experiencing sneezing or a runny nose after consuming or have exposure to onions are also typical symptoms of the onion allergy. This is mainly because the body is trying to expel the allergen from the system.

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How to Recognize if You're Allergic to Onions

If you suspect that you have an onion allergy, there are various signs and symptoms you need to consider. Contact with onions can produce different reactions depending on an individual's sensitivity level. Here's how you can identify if you have an allergy towards onions.

Look for Immediate Physical Reactions

Touch Sensitivity: If you observe skin irritation, rashes, or blisters when you touch onions, it could be a sign of contact dermatitis, which is common in allergy cases.
Eye Irritation: Onions are known to cause eye irritation, but allergy may elevate this response causing excessive redness, watering and a burning sensation.

Monitor Digestive Responses

Stomach Upset: You might experience stomach upset, pain, or bloating after consuming onions.
Diarrhea: Diarrhea or irregular bowel movement shortly after eating onions is a common symptom of food allergy.

Take Note of Respiratory Symptoms

Shortness of Breath: Allergies can cause asthmatic symptoms such as shortness of breath or wheezing. If you notice any of these symptoms after consuming or handling onions, you may have an onion allergy.
Runny Nose or Sneezing: These are common symptoms of allergies. Post-consumption of onions, if you experience repetitive sneezing or a runny nose, it could indicate an allergic reaction.

Do remember that the best way to confirm an allergy is by visiting a healthcare professional and getting an allergy test done. Over the counter medications may help to manage minor symptoms, but for the best diagnosis and treatment, it's crucial to speak with a medical expert.

Clinical Support

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Dr. Neeta Ogden, MD

Curex is poised to revolutionize the way allergies are treated in America, expanding access to clinical care and treatments that can meaningfully improve patients quality of life.

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At Curex, our mission is to help people improve their health and quality of life by understanding their allergies and treating them at their source.We provide more than individualized prescription treatments; we provide individualized care.

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Immunotherapy made simple. We enable patients to receive personalized allergy care on their own time. No more waiting rooms.

Dr. Chet Tharpe, Medical Director

Curex has set the standard for the virtual allergy experience. From the comfort of their home, patients nationwide are able to receive a personalized treatment plan from an experienced clinician, aimed at treating the source of their allergies, not just the symptoms.

Kayla Mardaga, NP

Curex offers convenient at-home allergy testing options. Our goal is to determine if a patient would benefit from immunotherapy and then customize a treatment plan that can reduce both the symptoms and the reliance on allergy medications.

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When Onions Grows and Its Impacts

Onion Planting Time in the U.S.

Onions are typically a cool-season crop, planted in the U.S. in the early spring or late winter, as soon as the soil can be worked. They can handle frosts and are usually planted 4-6 weeks before the last expected frost. Onions from transplants or sets should be planted in spring, usually in March or April.

Fall Planting

In warmer regions of the U.S., onions can also be planted in the fall, usually around October, for a late spring harvest. Fall planting is typically done for overwintering onion varieties.

Succession Planting

Onions can also benefit from succession planting, with new sets or seeds planted every 2-3 weeks. This allows for a continuous harvest of fresh onions throughout the growing season.

Where Onions Grows Across the USA?

Onion Growing Regions in the USA

The United States is one of the largest producers of onions in the world, with its onions growing in multiple regions throughout the nation.

Western States

California: California produces a significant portion of the nation's onions, primarily in the Imperial Valley, the San Joaquin Valley and the coastal region.
Oregon and Washington: In the Northwest, the Columbia Basin in Washington and the Treasure Valley in Oregon are prolific onion-growing areas.
Nevada and Idaho: Onions are also grown in the major agricultural regions of these states.

Southwestern States

Texas: Texas is another major producer of onions, primarily in the Rio Grande Valley.
New Mexico: Southern New Mexico, specifically around Hatch and Las Cruces, is a prominent onion-growing area.

Midwestern and Eastern States

Georgia and South Carolina: Vidalia onions from Georgia and sweet onions from South Carolina are popular and unique to their regions.
New York and Michigan: Onions are an important crop in both of these northern states.

Therefore, onions in the USA are grown in various regions, spanning from the West Coast to the East Coast. Each region produces different varieties, catering to a diverse range of culinary uses.

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Diagnostic of Onions Allergy with Curex

At-Home Automatic Test Kit

Receive a painless automatic blood collector at-home. Takes less than 5 minutes. Ship it back when done

In-Lab Test

Take your test at a local lab location. (often available same day)

Concierge At-Home Test

A medical professional comes to your home or office for a quick blood draw.(schedule 5-7 days in advance)

Tips for Avoiding Onions Allergy

‍

Avoid Direct Contact

Onion allergies are usually caused by direct contact with the onion, either through eating, touching, or inhaling it. Therefore, one of the best ways to avoid suffering from an onion allergy is to prevent direct contact as much as possible.

Wear Protective Gear

When handling onions, wear protective gear such as gloves and goggles. This will help avoid skin irritations and watery eyes, which are common symptoms of onion allergies.

Use Onion Alternatives

If your recipes call for onions, consider using alternatives such as garlic, leeks, or celery. They can impart a similar flavor to onions without causing an allergic reaction.

Check Food Labels

Some processed foods contain onion powder or onion flavoring. Always read the label and check for these ingredients before buying. If you're eating out, don't hesitate to ask the restaurant staff about the ingredients in their dishes.

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Diet to Ease Onions Allergy Symptoms

If you're allergic to onions, there are various diet modifications you might consider to ease your symptoms without having to completely avoid this common ingredient. Incorporating these foods into your routine could potentially help lessen severe allergic reactions.

Eat Foods that Boost Your Immune System

Fruits and vegetables rich in Vitamin C: Foods like strawberries, oranges, and broccoli can enhance your immune system's ability to fight off allergic reactions.
Probiotics: Foods containing probiotics like yogurt or fermented foods could help maintain the health of your gut bacteria, potentially reducing your overall allergic response.
Omega-3 fatty acids: Fish, nuts, and seeds containing Omega-3 can boost immune health and may help mitigate allergic reactions.

Incorporate Anti-inflammatory Foods

Turmeric: This spice contains curcumin which has anti-inflammatory properties.
Ginger: Ginger has also been proven effective in helping to reduce inflammation.
Garlic: Although it's a relative of onion, many onion-allergic individuals can tolerate garlic. It's also known for its anti-inflammatory effects.

Stay Hydrated

Drinking plenty of water can also help alleviate allergic symptoms by keeping your body healthy and flushing out toxins. Herbal teas like peppermint or chamomile can provide additional hydration and soothing benefits.

Please note, individual tolerance to these foods might vary, and testing how you react to these foods might be necessary. Always consult with a nutritionist or allergist for personalized advice.

What Food Worsens Onions Allergy

Avoid Foods Containing or Cooked with Onions

Reducing the severity of onion allergy symptoms primarily involves avoiding eating onions and foods containing onions. Therefore, foods that commonly contain or are cooked with onions should be restricted.

Foods that Commonly Contain Onions

Soups and Broths: Onions are often used as a base for many soup recipes.
Sauces: Onions are popular ingredients in a variety of sauces, especially in homemade tomato sauce or pasta sauce.
Marinades: Onions are often used in marinades for meat or chicken for their flavor.
Stir-Fries: Many stir-fry dishes contain onions.
Salads: Onions are a common ingredient in many salads.

Processed Foods

In addition to homemade dishes, several processed foods might contain onions, further exacerbating an onion allergy. These include:

Ready Meals: Pre-packaged meals often contain onions in their seasoning.
Snacks: Many snacks, specifically savory ones, might contain onion powder.
Salad Dressings: Onions, either fresh, cooked, or in powder form, are used in many salad dressings.
Fast Food: Many fast food items contain onions as one of their ingredients.

It's crucial to check the food ingredient labels before consuming to ensure they don’t contain onions. Furthermore, when dining out, one should communicate their onion allergy to restaurant staff to avoid any unwanted reactions.

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Allergy FAQ

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Can someone with an onion allergy eat cooked onions or onion powder?

Considerations for Onion Allergy

Individuals with an onion allergy should avoid both raw and cooked onions as cooking does not eliminate allergenic proteins.

Onion powder can also trigger allergic reactions, as it contains the same allergenic substances found in fresh onion.

It is crucial to read ingredient labels carefully and consult healthcare professionals for personalized advice.

What non-food products might contain onion derivatives that should be avoided?

Non-Food Products Containing Onion Derivatives

Cosmetics: Some skincare and haircare products use onion oil or extract for its purported benefits.

Herbal Remedies: May include onion powder or extracts in their formulations.

Cleaning Products: Certain eco-friendly products might use onion derivatives for natural scent.

Aromatherapy: Onion essential oils could be present in aromatherapy mixtures.

Is there a reliable way to test specifically for an onion allergy?

Testing for Onion Allergy

Consult an allergist, who may recommend a skin prick test to identify if you're allergic to onions specifically.

Blood tests measuring specific IgE antibodies can also help in diagnosing an onion allergy.

Consider an oral food challenge under medical supervision to confirm the allergy.

Keep a detailed food diary and note any adverse reactions post-consumption of onions to assist in diagnosis.

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At-home Immunotherapy

Benefits of Curex

At-home treatment

Apply treatments in minutes from the comfort of your own home with under-the-tongue applications instead of shots or pills

5-30x higher cumulative dose vs allergy shots

Sublingual immunotherapy delivers a higher dose of allergens over the course of treatment.

Potential for results in as few as 6 months

Individual results vary but some users have reported a noticeable difference in as few as 6-12 months since starting treatments

Excellent safety profile

Studies that have been reviewed by certified physicians show that sublingual immunotherapy is a safe treatment option

Allergy Testing and Immunotherapy in Los Angeles, California

Onion Allergy: Signs, Diagnosis & Treatment

Reviewed by Curex clinical team