Common Allergy Triggers (2024)

Common Allergy Triggers (1)
Medically Reviewed by Poonam Sachdev on March 27, 2024

Common Allergy Triggers (2)

1. Your Overactive Immune System

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Many things can trigger an allergic reaction. It happens when your body's defenses attack something that's usually harmless, such as pollen, animal dander, or food. The reaction can range from mild and annoying to sudden and life-threatening.In the US, about 30% of all adults and 40% of children have allergies.

Common Allergy Triggers (3)

2. Pollen

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It comes from plants such as grasses, trees, and weeds and can trigger hay fever or seasonal allergies. You might sneeze and have a runny or stuffy nose and itchy, watery eyes. Treat these with over-the-counter products, prescription drugs, and allergy shots. To help prevent symptoms, stay inside on windy days when pollen counts are high, close windows, and run the air conditioning.

Common Allergy Triggers (4)

3. Animal Dander

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You love your pet, but if you're allergic, you react to proteins in their saliva or in their skin's oil glands. It might take 2 years for that to start. Luckily, you may still be able to live with them. Make your bedroom a pet-free zone, opt for bare floors and washable rugs instead of carpets, and bathe them regularly. A HEPA filter and allergy shots may help, too.

Common Allergy Triggers (5)

4. Dust Mites

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These tiny bugs live in bedding, mattresses, upholstery, carpets, and curtains. They feed on dead skin cells from people and pets, as well as on pollen, bacteria, and fungi. They thrive in high humidity. To cut down on problems, use hypoallergenic pillows, cover mattresses, pillows, and box springs, and wash sheets weekly in hot water. Keep the house free of dust-collecting items such as stuffed animals, curtains, and carpet.

Common Allergy Triggers (6)

5. Insect Stings

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These could cause swelling and redness that may last a week or more. You might feel sick to your stomach and tired and have a low fever. In rare cases, insect bites trigger a reaction that can be life-threatening, called anaphylaxis. If you're severely allergic, you'll need medicine called epinephrine right away. Your doctor may recommend allergy shots to prevent reactions.

Common Allergy Triggers (7)

6. Mold

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It needs moisture to grow. You can find it in damp places such as basem*nts or bathrooms, as well as in grass or mulch. Since breathing in mold spores can set off an allergic reaction, avoid activities that could trigger symptoms, such as raking leaves. Get air moving in moist areas of your home.

Common Allergy Triggers (8)

7. Food

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Milk, shellfish, eggs, and nuts are among the most common foods that cause allergies. Others include wheat, soy, and fish. Within minutes of eating something you're allergic to, you could have trouble breathing and get hives, vomiting, diarrhea, and swelling around your mouth. If your reaction is severe, you will need emergency medical help. So call 911, and use your epinepherine pen if you were prescribed one.

Common Allergy Triggers (9)

8. Latex

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Found in some disposable gloves, condoms, and medical devices, latex can trigger a reaction ranging from itchy, red skin to anaphylaxis with trouble breathing. Symptoms can include a rash or hives, eye irritation, runny or itchy nose, sneezing, and wheezing. If you’re allergic, wear a medical alert bracelet and carry an epinephrine kit if you were prescribed one.

Common Allergy Triggers (10)

9. Medication

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Penicillin, aspirin, and other drugs can cause hives, itchy eyes, stuffiness, and swelling in your face, mouth, and throat. If you're allergic to a drug, it's best to not take it. Your doctor can talk to you about other medicine options or treatments that may allow you to take a medicine if it's necessary.

Common Allergy Triggers (11)

10. co*ckroaches

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A protein in their droppings can be a trigger. Roaches can be tough to get rid of, especially in a warm climate or if you live in an apartment building where they can move back and forth between neighbors. Treat them with bug killer, and keep a clean kitchen. Repair cracks and holes in floors, walls, and windows to keep them out of your home.

Common Allergy Triggers (2024)

FAQs

What are the top 10 most common allergies? ›

The 10 most common allergies include foods, animals, pollen, mold, dust mites, medications, latex, insect stings, co*ckroaches, and perfumes/household chemicals. Allergies are a condition in which the body's immune system considers a substance as a harmful “invader” and overreacts to it.

What are allergies triggered by? ›

Allergy occurs when a person reacts to substances in the environment that are harmless to most people. These substances are known as allergens. Allergens are found in dust mites, pets, pollen, insects, ticks, moulds, foods and some medications.

What are the most common food allergy triggers? ›

Most food allergies are triggered by certain proteins in:
  • Crustacean shellfish, such as shrimp, lobster and crab.
  • Peanuts.
  • Tree nuts, such as walnuts and pecans.
  • Fish.
  • Chicken eggs.
  • Cow's milk.
  • Wheat.
  • Soy.
Dec 13, 2023

How do I know what triggered my allergies? ›

Skin prick (scratch) tests can identify the allergens that cause your allergy symptoms. An allergist will use a thin needle to prick your skin with a tiny amount of different possible allergens. They then check to see if your skin reacts to the allergen. Blood (IgE) tests can also identify allergies.

What are the 7 major allergies? ›

Major Food Allergens

Congress passed the Food Allergen Labeling and Consumer Protection Act of 2004 (FALCPA). This law identified eight foods as major food allergens: milk, eggs, fish, Crustacean shellfish, tree nuts, peanuts, wheat, and soybeans.

What's the worst allergies to have? ›

Slideshow: Life-Threatening Allergy Triggers
  • Peanuts Can Be Dangerous. 1/15. ...
  • Shellfish, Fish, Anaphylaxis. 2/15. ...
  • Sesame Seeds, Tree Nuts, Soy. 3/15. ...
  • Hidden Allergies: Dairy, Wheat and Egg. 4/15. ...
  • Flying Insect Stings and Allergies. 5/15. ...
  • Ants, Ticks and Anaphylaxis. 6/15. ...
  • Prescription Medicine and Reactions. ...
  • Latex and Anaphylaxis.
Sep 29, 2023

What is causing my sudden allergies? ›

Adult-onset allergies can occur seemingly out of nowhere due to exposure to new allergens in the environment, family history and changes in the immune system. The most common food allergies in adults are peanuts, fish, shellfish such as shrimp, lobster and tree nuts (almonds, walnuts, pecans and cashews).

What is causing my allergies to act up? ›

Many things can trigger allergies. The most common are pollen, dust mites, mold, animal dander, insect stings, latex, and certain food and medications.

Do allergies get worse with age? ›

Allergies can worsen over time because, as you age, your immune system changes. Sometimes it can become intolerant to allergens it used to tolerate. Seasonal allergies can also be worse due to climate change. Climate change has lengthened pollen season, making seasonal allergies last longer.

What foods help relieve allergies? ›

Quercetin is found in other foods such as berries, capers, grapes, cabbage, cauliflower, onions (especially red onions), shallots, tea and tomatoes. Quercetin can help the body fight allergies because of its anti-inflammatory, antioxidant and antiviral properties.

What is the rarest food to be allergic to? ›

The most uncommon food allergens include bananas, beef, carrots, celery, corn, fish, garlic, ham, honey, lamb, lemon, malt, onion, orange, pork, pineapple, rice, salmon, sugar, turkey, and vanilla. Reading the ingredient list is the best way to determine if a food contains an allergen.

What flares up your allergies? ›

Common allergy triggers include:
  • Airborne allergens, such as pollen, animal dander, dust mites and mold.
  • Certain foods, particularly peanuts, tree nuts, wheat, soy, fish, shellfish, eggs and milk.
  • Insect stings, such as from a bee or wasp.
  • Medications, particularly penicillin or penicillin-based antibiotics.
Aug 5, 2022

Why are allergies so bad right now? ›

Changes in climate patterns can impact the distribution and concentration of allergens. Warmer temperatures and increased humidity may lead to longer and more intense allergy seasons.

What are the 14 most allergies? ›

The 14 allergens are: celery, cereals containing gluten (such as wheat, barley and oats), crustaceans (such as prawns, crabs and lobsters), eggs, fish, lupin, milk, molluscs (such as mussels and oysters), mustard, peanuts, sesame, soybeans, sulphur dioxide and sulphites (if the sulphur dioxide and sulphites are at a ...

What are the top 13 food allergies? ›

What Are the Top 14 Food Allergens?
  • Eggs.
  • Cow's milk.
  • Fish.
  • Shellfish.
  • Peanuts.
  • Tree nuts.
  • Soy.
  • Wheat.

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