What can allergies cause symptoms

There are two other potential issues with chocolate:

  1. Bedford B, Yu Y, Wang X, Garber EAE, Jackson LS. A Limited Survey of Dark Chocolate Bars Obtained in the United States for Undeclared Milk and Peanut Allergens. Journal of Food Protection. 2017;80(4):692-702. doi:10.4315/0362-028x.jfp-16-443

  2. Drug Interactions: Rarely, chocolate may cause symptoms that resemble allergy symptoms (like skin itchiness) in people taking the common medication Prozac (fluoxetine).

    It's possible that the sensitivity to the biological chemical serotonin that seems to cause this unusual reaction can happen due to Prozac, or other similar drugs. Be certain your allergist is aware of any medications you're taking before you undergo allergy testing. This could be especially useful information if your tests are negative.

  3. Lopes JP, Kattan J, Doppelt A, Nowak-Węgrzyn A, Bunyavanich S. Not so sweet: True chocolate and cocoa allergy. The Journal of Allergy and Clinical Immunology: In Practice.

    2019;7(8):2868-2871. doi:10.1016/j.jaip.2019.04.023

  4. Visioli F, Bernardini E, Poli A, Paoletti R. Chocolate and Health: A Brief Review of the Evidence. Chocolate and Health. 2012:63-75. doi:10.1007/978-88-470-2038-2_5

  5. Caffeine: Contrary to favorite belief, chocolate is extremely low in caffeine: one ounce of milk chocolate contains only six milligrams of caffeine. In comparison, one 12-ounce can of Coca-Cola has 34 milligrams, and a 2-ounce double espresso can range from 45 to 100 milligrams.

    What can allergies cause symptoms

    However, if you are highly sensitive to caffeine, chocolate may exacerbate your symptoms, and you may discover that you're better off avoiding it. Dark chocolate has far more caffeine than milk chocolate.

  6. Cederberg J, Knight S, Svenson S, Melhus H. Itch and skin rash from chocolate during fluoxetine and sertraline treatment: case report. BMC Psychiatry. 2004;4:36. Published 2004 Nov 2.

    What can allergies cause symptoms

    doi:10.1186/1471-244X-4-36

Thanks for your feedback!

Verywell Health uses only high-quality sources, including peer-reviewed studies, to support the facts within our articles. Read our editorial policy to study more about how we fact-check and hold our content precise, dependable, and trustworthy.

  • Visioli F, Bernardini E, Poli A, Paoletti R. Chocolate and Health: A Brief Review of the Evidence. Chocolate and Health. 2012:63-75. doi:10.1007/978-88-470-2038-2_5

  • Bedford B, Yu Y, Wang X, Garber EAE, Jackson LS.

    A Limited Survey of Dark Chocolate Bars Obtained in the United States for Undeclared Milk and Peanut Allergens. Journal of Food Protection. 2017;80(4):692-702. doi:10.4315/0362-028x.jfp-16-443

  • Cederberg J, Knight S, Svenson S, Melhus H. Itch and skin rash from chocolate during fluoxetine and sertraline treatment: case report. BMC Psychiatry. 2004;4:36. Published 2004 Nov 2. doi:10.1186/1471-244X-4-36

  • Lopes JP, Kattan J, Doppelt A, Nowak-Węgrzyn A, Bunyavanich S. Not so sweet: True chocolate and cocoa allergy. The Journal of Allergy and Clinical Immunology: In Practice. 2019;7(8):2868-2871.

    doi:10.1016/j.jaip.2019.04.023

  • Cederberg, Jonas, et al. "Itch and Skin Rash from Chocolate During Fluoxetine and Sertraline Treatment: Case Report." BMC Psychiatry. 2004. 4:36.

Additional Reading

  1. Cederberg, Jonas, et al. "Itch and Skin Rash from Chocolate During Fluoxetine and Sertraline Treatment: Case Report." BMC Psychiatry. 2004. 4:36.

The primary way to manage a food allergy is to avoid consuming the food that causes you problems. Carefully check ingredient labels of food products, and study whether what you need to avoid is known by other names.

The Food Allergy Labeling and Consumer Protection Act of 2004 (FALCPA) mandates that manufacturers of packaged foods produced in the United States identify, in simple, clear language, the presence of any of the eight most common food allergens — milk, egg, wheat, soy, peanut, tree nut, fish and crustacean shellfish — in their products.

The presence of the allergen must be stated even if it is only an incidental ingredient, as in an additive or flavoring.

Some goods also may be labeled with precautionary statements, such as “may contain,” “might contain,” “made on shared equipment,” “made in a shared facility” or some other indication of potential allergen contamination. There are no laws or regulations requiring those advisory warnings and no standards that define what they mean. If you own questions about what foods are safe for you to eat, talk with your allergist.

Be advised that the FALCPA labeling requirements do not apply to items regulated by the U.S.

Department of Agriculture (meat, poultry and certain egg products) and those regulated by the Alcohol and Tobacco Tax and Trade Bureau (distilled spirits, wine and beer). The law also does not apply to cosmetics, shampoos and other health and beauty aids, some of which may contain tree nut extracts or wheat proteins.

Avoiding an allergen is easier said than done. While labeling has helped make this process a bit easier, some foods are so common that avoiding them is daunting.

A dietitian or a nutritionist may be capable to assist. These food experts will offer tips for avoiding the foods that trigger your allergies and will ensure that even if you exclude certain foods from your diet, you still will be getting every the nutrients you need. Special cookbooks and support groups, either in person or online, for patients with specific allergies can also provide useful information.

Many people with food allergies wonder whether their condition is permanent.

There is no definitive answer. Allergies to milk, eggs, wheat and soy may vanish over time, while allergies to peanuts, tree nuts, fish and shellfish tend to be lifelong.

Anaphylaxis

Symptoms caused by a food allergy can range from mild to life-threatening; the severity of each reaction is unpredictable. People who own previously experienced only mild symptoms may suddenly experience a life-threatening reaction called anaphylaxis, which can, among other things, impair breathing and cause a sudden drop in blood pressure.

This is why allergists do not love to classify someone as “mildly” or “severely” food allergic — there is just no way to tell what may happen with the next reaction. In the U.S., food allergy is the leading cause of anaphylaxis exterior the hospital setting.

Epinephrine (adrenaline) is the first-line treatment for anaphylaxis, which results when exposure to an allergen triggers a flood of chemicals that can send your body into shock.

What can allergies cause symptoms

Anaphylaxis can happen within seconds or minutes of exposure to the allergen, can worsen quickly and can be fatal.

Once you’ve been diagnosed with a food allergy, your allergist should prescribe an epinephrine auto-injector and teach you how to use it. You should also be given a written treatment plan describing what medications you’ve been prescribed and when they should be used. Check the expiration date of your auto-injector, note the expiration date on your calendar and enquire your pharmacy about reminder services for prescription renewals.

Anyone with a food allergy should always own his or her auto-injector shut at hand.

Be certain to own two doses available, as the severe reaction can recur in about 20 percent of individuals. There are no data to assist predict who may need a second dose of epinephrine, so this recommendation applies to every patients with a food allergy.

Use epinephrine immediately if you experience severe symptoms such as shortness of breath, repetitive coughing, feeble pulse, hives, tightness in your throat, trouble breathing or swallowing, or a combination of symptoms from diverse body areas, such as hives, rashes or swelling on the skin coupled with vomiting, diarrhea or abdominal pain.

Repeated doses may be necessary. You should call for an ambulance (or own someone nearby do so) and inform the dispatcher that epinephrine was istered and more may be needed. You should be taken to the emergency room; policies for monitoring patients who own been given epinephrine vary by hospital.

If you are uncertain whether a reaction warrants epinephrine, use it correct away; the benefits of epinephrine far outweigh the risk that a dose may not own been necessary.

Common side effects of epinephrine may include anxiety, restlessness, dizziness and shakiness. In extremely rare instances, the medication can lead to abnormal heart rate or rhythm, heart attack, a sharp increase in blood pressure and fluid buildup in the lungs.

If you own certain pre-existing conditions, such as heart disease or diabetes, you may be at a higher risk for adverse effects from epinephrine. Still, epinephrine is considered extremely safe and is the most effective medicine to treat severe allergic reactions.

Other medications may be prescribed to treat symptoms of a food allergy, but it is significant to note that there is no substitute for epinephrine: It is the only medication that can reverse the life-threatening symptoms of anaphylaxis.

Eating out

Be additional careful when eating in restaurants.

Waiters (and sometimes the kitchen staff) may not always know the ingredients of every dish on the menu. Depending on your sensitivity, even just walking into a kitchen or a restaurant can cause an allergic reaction.

Consider using a “chef card” — available through numerous websites — that identifies your allergy and what you cannot eat. Always tell your servers about your allergies and enquire to speak to the chef, if possible. Stress the need for preparation surfaces, pans, pots and utensils that haven’t been contaminated by your allergen, and clarify with the restaurant staff what dishes on the menu are safe for you.

Managing food allergies in children

No parent wants to see their kid suffer.

Since fatal and near-fatal food allergy reactions can happen at school or other places exterior the home, parents of a kid with food allergies need to make certain that their child’s school has a written emergency action plan. The plan should provide instructions on preventing, recognizing and managing food allergies and should be available in the school and during activities such as sporting events and field trips. If your kid has been prescribed an auto-injector, be certain that you and those responsible for supervising your kid understand how to use it.

In November 2013, President Barack Obama signed into law the School Access to Emergency Epinephrine Act (PL 113-48), which encourages states to adopt laws requiring schools to own epinephrine auto-injectors on hand.

As of tardy 2014, dozens of states had passed laws that either require schools to own a supply of epinephrine auto-injectors for general use or permit school districts the option of providing a supply of epinephrine. Numerous of these laws are new, and it is uncertain how well they are being implemented. As a result, ACAAI still recommends that providers caring for food-allergic children in states with such laws maintain at least two units of epinephrine per allergic kid attending the school.

Can food allergies be prevented?

In 2013, the American Academy of Pediatrics published a study which supported research suggesting that feeding solid foods to extremely young babies could promote allergies.

It recommends against introducing solid foods tobabies younger than 17 weeks. It also suggests exclusively breast-feeding “for as endless as possible,” but stops short of endorsing earlier research supporting six months of exclusive breast-feeding.

Research on the benefits of feeding hypoallergenic formulas to high-risk children – those born into families with a strong history of allergic diseases – is mixed.

In the case of peanut allergy, the National Institute for Allergy and Infectious Disease (NIAID) issued new updated guidelines in 2017 in order to define high, moderate and low-risk infants for developing peanut allergy.

The guidelines also address how to proceed with introduction based on risk.

The updated guidelines are a breakthrough for the prevention of peanut allergy. Peanut allergy has become much more prevalent in recent years, and there is now a roadmap to prevent numerous new cases.

According to the new guidelines, an baby at high risk of developing peanut allergy is one with severe eczema and/or egg allergy. The guidelines recommend introduction of peanut-containing foods as early as 4-6 months for high-risk infants who own already started solid foods, after determining that it is safe to do so.

Parents should know that most infants are either moderate- or low-risk for developing peanut allergies, and most can own peanut-containing foods introduced at home. Whole peanuts should never be given to infants because they are a choking hazard.

If your kid has no factors to be at high risk, the best way to introduce peanuts is to make certain first of every your kid is healthy – they don’t own a freezing, fever or anything else. Make certain it’s not the first food you’ve introduced to them.

Ruchi Gupta, MD, ACAAI member

Clinical studies are ongoing in food allergy to assist develop tolerances to specific foods.

Askyour board-certified allergistif you or your kid may be a candidate for one of these studies.

Additional Reading

  1. Cederberg, Jonas, et al. "Itch and Skin Rash from Chocolate During Fluoxetine and Sertraline Treatment: Case Report." BMC Psychiatry. 2004. 4:36.

The primary way to manage a food allergy is to avoid consuming the food that causes you problems. Carefully check ingredient labels of food products, and study whether what you need to avoid is known by other names.

The Food Allergy Labeling and Consumer Protection Act of 2004 (FALCPA) mandates that manufacturers of packaged foods produced in the United States identify, in simple, clear language, the presence of any of the eight most common food allergens — milk, egg, wheat, soy, peanut, tree nut, fish and crustacean shellfish — in their products.

The presence of the allergen must be stated even if it is only an incidental ingredient, as in an additive or flavoring.

Some goods also may be labeled with precautionary statements, such as “may contain,” “might contain,” “made on shared equipment,” “made in a shared facility” or some other indication of potential allergen contamination. There are no laws or regulations requiring those advisory warnings and no standards that define what they mean. If you own questions about what foods are safe for you to eat, talk with your allergist.

Be advised that the FALCPA labeling requirements do not apply to items regulated by the U.S. Department of Agriculture (meat, poultry and certain egg products) and those regulated by the Alcohol and Tobacco Tax and Trade Bureau (distilled spirits, wine and beer). The law also does not apply to cosmetics, shampoos and other health and beauty aids, some of which may contain tree nut extracts or wheat proteins.

Avoiding an allergen is easier said than done. While labeling has helped make this process a bit easier, some foods are so common that avoiding them is daunting. A dietitian or a nutritionist may be capable to assist.

What can allergies cause symptoms

These food experts will offer tips for avoiding the foods that trigger your allergies and will ensure that even if you exclude certain foods from your diet, you still will be getting every the nutrients you need. Special cookbooks and support groups, either in person or online, for patients with specific allergies can also provide useful information.

Many people with food allergies wonder whether their condition is permanent. There is no definitive answer. Allergies to milk, eggs, wheat and soy may vanish over time, while allergies to peanuts, tree nuts, fish and shellfish tend to be lifelong.

Anaphylaxis

Symptoms caused by a food allergy can range from mild to life-threatening; the severity of each reaction is unpredictable.

People who own previously experienced only mild symptoms may suddenly experience a life-threatening reaction called anaphylaxis, which can, among other things, impair breathing and cause a sudden drop in blood pressure. This is why allergists do not love to classify someone as “mildly” or “severely” food allergic — there is just no way to tell what may happen with the next reaction. In the U.S., food allergy is the leading cause of anaphylaxis exterior the hospital setting.

Epinephrine (adrenaline) is the first-line treatment for anaphylaxis, which results when exposure to an allergen triggers a flood of chemicals that can send your body into shock.

Anaphylaxis can happen within seconds or minutes of exposure to the allergen, can worsen quickly and can be fatal.

Once you’ve been diagnosed with a food allergy, your allergist should prescribe an epinephrine auto-injector and teach you how to use it. You should also be given a written treatment plan describing what medications you’ve been prescribed and when they should be used. Check the expiration date of your auto-injector, note the expiration date on your calendar and enquire your pharmacy about reminder services for prescription renewals.

Anyone with a food allergy should always own his or her auto-injector shut at hand.

Be certain to own two doses available, as the severe reaction can recur in about 20 percent of individuals. There are no data to assist predict who may need a second dose of epinephrine, so this recommendation applies to every patients with a food allergy.

Use epinephrine immediately if you experience severe symptoms such as shortness of breath, repetitive coughing, feeble pulse, hives, tightness in your throat, trouble breathing or swallowing, or a combination of symptoms from diverse body areas, such as hives, rashes or swelling on the skin coupled with vomiting, diarrhea or abdominal pain. Repeated doses may be necessary. You should call for an ambulance (or own someone nearby do so) and inform the dispatcher that epinephrine was istered and more may be needed.

You should be taken to the emergency room; policies for monitoring patients who own been given epinephrine vary by hospital.

If you are uncertain whether a reaction warrants epinephrine, use it correct away; the benefits of epinephrine far outweigh the risk that a dose may not own been necessary.

Common side effects of epinephrine may include anxiety, restlessness, dizziness and shakiness. In extremely rare instances, the medication can lead to abnormal heart rate or rhythm, heart attack, a sharp increase in blood pressure and fluid buildup in the lungs. If you own certain pre-existing conditions, such as heart disease or diabetes, you may be at a higher risk for adverse effects from epinephrine.

Still, epinephrine is considered extremely safe and is the most effective medicine to treat severe allergic reactions.

Other medications may be prescribed to treat symptoms of a food allergy, but it is significant to note that there is no substitute for epinephrine: It is the only medication that can reverse the life-threatening symptoms of anaphylaxis.

Eating out

Be additional careful when eating in restaurants. Waiters (and sometimes the kitchen staff) may not always know the ingredients of every dish on the menu. Depending on your sensitivity, even just walking into a kitchen or a restaurant can cause an allergic reaction.

Consider using a “chef card” — available through numerous websites — that identifies your allergy and what you cannot eat.

Always tell your servers about your allergies and enquire to speak to the chef, if possible. Stress the need for preparation surfaces, pans, pots and utensils that haven’t been contaminated by your allergen, and clarify with the restaurant staff what dishes on the menu are safe for you.

Managing food allergies in children

No parent wants to see their kid suffer. Since fatal and near-fatal food allergy reactions can happen at school or other places exterior the home, parents of a kid with food allergies need to make certain that their child’s school has a written emergency action plan. The plan should provide instructions on preventing, recognizing and managing food allergies and should be available in the school and during activities such as sporting events and field trips.

If your kid has been prescribed an auto-injector, be certain that you and those responsible for supervising your kid understand how to use it.

In November 2013, President Barack Obama signed into law the School Access to Emergency Epinephrine Act (PL 113-48), which encourages states to adopt laws requiring schools to own epinephrine auto-injectors on hand. As of tardy 2014, dozens of states had passed laws that either require schools to own a supply of epinephrine auto-injectors for general use or permit school districts the option of providing a supply of epinephrine. Numerous of these laws are new, and it is uncertain how well they are being implemented.

As a result, ACAAI still recommends that providers caring for food-allergic children in states with such laws maintain at least two units of epinephrine per allergic kid attending the school.

Can food allergies be prevented?

In 2013, the American Academy of Pediatrics published a study which supported research suggesting that feeding solid foods to extremely young babies could promote allergies. It recommends against introducing solid foods tobabies younger than 17 weeks. It also suggests exclusively breast-feeding “for as endless as possible,” but stops short of endorsing earlier research supporting six months of exclusive breast-feeding.

Research on the benefits of feeding hypoallergenic formulas to high-risk children – those born into families with a strong history of allergic diseases – is mixed.

In the case of peanut allergy, the National Institute for Allergy and Infectious Disease (NIAID) issued new updated guidelines in 2017 in order to define high, moderate and low-risk infants for developing peanut allergy. The guidelines also address how to proceed with introduction based on risk.

The updated guidelines are a breakthrough for the prevention of peanut allergy. Peanut allergy has become much more prevalent in recent years, and there is now a roadmap to prevent numerous new cases.

According to the new guidelines, an baby at high risk of developing peanut allergy is one with severe eczema and/or egg allergy. The guidelines recommend introduction of peanut-containing foods as early as 4-6 months for high-risk infants who own already started solid foods, after determining that it is safe to do so. Parents should know that most infants are either moderate- or low-risk for developing peanut allergies, and most can own peanut-containing foods introduced at home. Whole peanuts should never be given to infants because they are a choking hazard.

If your kid has no factors to be at high risk, the best way to introduce peanuts is to make certain first of every your kid is healthy – they don’t own a freezing, fever or anything else.

Make certain it’s not the first food you’ve introduced to them.

Ruchi Gupta, MD, ACAAI member

Clinical studies are ongoing in food allergy to assist develop tolerances to specific foods. Askyour board-certified allergistif you or your kid may be a candidate for one of these studies.


Severe allergic reaction (anaphylaxis)

In rare cases, an allergy can lead to a severe allergic reaction, called anaphylaxis or anaphylactic shock, which can be life threatening.

This affects the whole body and usually develops within minutes of exposure to something you’re allergic to.

Signs of anaphylaxis include any of the symptoms above, as well as:

Anaphylaxis is a medical emergency that requires immediate treatment.

Read more about anaphylaxis for information about what to do if it occurs.

Sheet final reviewed: 22 November 2018
Next review due: 22 November 2021

What Things Cause Allergies?

Airborne Allergy Symptoms

Airborne allergens can cause something known as allergic rhinitis, which generally develops by 10 years of age, reaches its peak in the teens or early twenties, and often disappears between the ages of 40 and 60.

Symptoms can include:

  1. itchy nose and/or throat
  2. sneezing
  3. stuffy nose
  4. coughing

When symptoms also include itchy, watery, and/or red eyes, this is called allergic conjunctivitis.

(Dark circles that sometimes show up around the eyes are called allergic «shiners.»)

Other Common Allergens

  1. Medicines. Antibiotics are the most common type of medicines that cause allergic reactions. Numerous other others, including over-the-counter medicines (those you can purchase without a prescription), also can cause allergic reactions.
  2. Insect allergy. For most kids, being stung by an insect means swelling, redness, and itching at the site of the bite. But for those with insect venom allergy, an insect sting can cause more serious symptoms.
  3. Chemicals. Some cosmetics or laundry detergents can make people break out in hives.

    Generally, this is because someone has a reaction to the chemicals in these products, though it may not always be an allergic reaction. Dyes, household cleaners, and pesticides used on lawns or plants also can cause allergic reactions in some people.

Some kids also own what are called cross-reactions. For example, kids who are allergic to birch pollen might own symptoms when they eat an apple because that apple is made up of a protein similar to one in the pollen.

And for reasons that aren’t clear, people with a latex allergy (found in latex gloves and some kinds of hospital equipment) are more likely to be allergic to foods likekiwi, chestnuts, avocados, and bananas.

Who Gets Allergies?

The tendency to develop allergies is often hereditary, which means it can be passed below through genes from parents to their kids. But just because you, your partner, or one of your children might own allergies doesn’t mean that every of your kids will definitely get them. And someone generally doesn’t inherit a particular allergy, just the likelihood of having allergies.

Some kids own allergies even if no family member is allergic, and those who are allergic to one thing are likely to be allergic to others.

What Are the Signs and Symptoms of Allergies?

The type and severity of allergy symptoms vary from allergy to allergy and person to person.

Allergies may show up as itchy eyes, sneezing, a stuffy nose, throat tightness, trouble breathing, vomiting, and even fainting or passing out.

Kids with severe allergies (such as those to food, medicine, or insect venom) can be at risk for a sudden, potentially life-threatening allergic reaction called anaphylaxis. Anaphylaxis can happen just seconds after being exposed to an allergen or not until a few hours later (if the reaction is from a food).

So doctors will desire anyone diagnosed with a life-threatening allergy to carry an epinephrine auto-injector in case of an emergency. Epinephrine works quickly against serious allergy symptoms; for example, it reduces swelling and raises low blood pressure.

Food, Medicines, or Insect Allergy Symptoms

  1. itchy, watery, or swollen eyes
  2. stomachache
  3. hives
  4. a drop in blood pressure, causing lightheadedness or loss of consciousness
  5. coughing
  6. diarrhea
  7. A drop of a purified liquid form of the allergen is dropped onto the skin and the area is scratched with a little pricking device.
  8. vomiting
  9. swelling
  10. hoarseness
  11. throat tightness
  12. trouble breathing
  13. wheezing
  14. A little quantity of allergen is injected just under the skin.

    This test stings a little but isn’t painful.

Allergic reactions can vary. Sometimes, a person can own a mild reaction that affects only one body system, love hives on the skin. Other times, the reaction can be more serious and involve more than one part of the body. A mild reaction in the past does not mean that future reactions will be mild.

How Are Allergies Diagnosed?

Some allergies are fairly simple to identify but others are less obvious because they can be similar to other conditions.

If your kid has cold-like symptoms lasting longer than a week or two or develops a «cold» at the same time every year, talk with your doctor, who might diagnose an allergy and prescribe medicines, or may refer you to an allergist(a doctor who is an expert in the treatment of allergies) for allergy tests.

To discover the cause of an allergy, allergists generally do skin tests for the most common environmental and food allergens.

A skin test can work in one of two ways:

  • Dust mites are microscopic insects that live every around us and feed on the millions of dead skin cells that drop off our bodies every day. They’re the main allergic component of home dust. Dust mites are present year-round in most parts of the United States and live in bedding, upholstery, and carpets.
  • Keep kids who areallergic to mold away fromdamp areas, such as some basements, and hold bathrooms and other mold-prone areas clean and dry.
  • Cockroaches are also a major household allergen, especially in inner cities. Exposure to cockroach-infested buildings may be a major cause of the high rates of asthma in inner-city kids.
  • Eggs. Egg allergy can be a challenge for parents.

    Eggs are used in numerous of the foods kids eat — and in numerous cases they’re «hidden» ingredients. Kids tend to outgrow egg allergies as they get older.

  • Don’t hang heavy drapes and get rid of other items that permit dust to build up.
  • Pet allergens are caused by pet dander (tiny flakes of shed skin) and animal saliva. When pets lick themselves, the saliva gets on their fur or feathers. As the saliva dries, protein particles become airborne and work their way into fabrics in the home. Pet urine also can cause allergies in the same way when it gets on airborne fur or skin, or when a pet pees in a spot that isn’t cleaned.
  • Soy. Soy allergy is more common among babies than older kids.

    Numerous infants who are allergic to cow’s milk are also allergic to the protein in soy formulas. Soy proteins are often a hidden ingredient in prepared foods.

  • Pollen is a major cause of allergies (a pollen allergy is often calledhay fever or rose fever). Trees, weeds, and grasses release these tiny particles into the air to fertilize other plants. Pollen allergies are seasonal, and the type of pollen someone is allergic to determines when symptoms happen.

    Pollen counts measure how much pollen is in the air and can assist people with allergies predict how bad their symptoms might be on any given day.

    Pollen counts are generally higher in the morning and on warm, dry, breezy days, and lowest when it’s chilly and wet.

  • Cow’s milk(or cow’s milk protein). Between 2% and 3% of children younger than 3 years ancient are allergic to the proteins found in cow’s milk and cow’s milk-based formulas. Most formulas are cow’s milk-based. Milk proteins also can be a hidden ingredient in prepared foods. Numerous kids outgrow milk allergies.
  • Keep family pets out of your child’s bedroom.
  • Peanuts and tree nuts. Peanut allergies are on the rise, and as are allergies to tree nuts, such as almonds, walnuts, pecans, hazelnuts, and cashews.

    Most people do not outgrow peanut or tree nut allergies.

  • If your kid has a pollen allergy, hold the windows closed when pollen season is at its peak, own your kid take a bath or shower and change clothes after being outdoors, and don’t let him or her mow the lawn.
  • Clean when your kid is not in the room.
  • Moldsare fungi that thrive both indoors and exterior in warm, moist environments. Outdoors, molds can be found in poor drainage areas, such as in piles of rotting leaves or compost piles. Indoors, molds thrive in dark, poorly ventilated places such as bathrooms and damp basements.

    Molds tend to be seasonal, but some can grow year-round, especially those indoors.

  • A drop of a purified liquid form of the allergen is dropped onto the skin and the area is scratched with a little pricking device.
  • Remove carpets or rugs from your child’s room (hard floors don’t collect dust as much as carpets do).
  • A little quantity of allergen is injected just under the skin. This test stings a little but isn’t painful.
  • Fish and shellfish. These allergies are some of the more common adult food allergies and ones that people generally don’t outgrow.

    Fish and shellfish are from diverse families of food, so having an allergy to one does not necessarily mean someone will be allergicto the other.

  • Use special covers to seal pillows and mattresses if your kid is allergic to dust mites.
  • Wheat. Wheat proteins are found in numerous foods, and some are more obvious than others. Although wheat allergy is often confused with celiac disease, there is a difference. Celiac disease is a sensitivity to gluten (found in wheat, rye, and barley).

    But a wheat allergy can do more than make a person feel ill — love other food allergies, it also can cause a life-threatening reaction.

After about 15 minutes, if a lump surrounded by a reddish area (like a mosquito bite) appears at the site, the test is positive.

Blood tests may be done instead for kids with skin conditions, those who are on certain medicines, or those who are extremely sensitive to a specific allergen.

Even if testing shows an allergy, a kid also must own symptoms to be diagnosed with an allergy. For example, a toddler who has a positive test for dust mites and sneezes a lot while playing on the floor would be considered allergic to dust mites.

Severe allergic reaction (anaphylaxis)

In rare cases, an allergy can lead to a severe allergic reaction, called anaphylaxis or anaphylactic shock, which can be life threatening.

This affects the whole body and usually develops within minutes of exposure to something you’re allergic to.

Signs of anaphylaxis include any of the symptoms above, as well as:

Anaphylaxis is a medical emergency that requires immediate treatment.

Read more about anaphylaxis for information about what to do if it occurs.

Sheet final reviewed: 22 November 2018
Next review due: 22 November 2021

What Are Allergies?

Allergies are abnormal immune system reactions to things that are typically harmless to most people. When a person is allergic to something, the immune system mistakenly believes that this substance is harming the body.

Substances that cause allergic reactions — such as some foods, dust, plant pollen, or medicines — are known as allergens.

Allergies are a major cause of illness in the United States.

Up to 50 million Americans, including millions of kids, own some type of allergy. In fact, allergies cause about 2 million missed school days each year.

How Do Allergies Happen?

An allergy happens when the immune system& overreacts to an allergen, treating it as an invader and trying to fight it off. This causes symptoms that can range from annoying to serious or even life-threatening.

In an attempt to protect the body, the immune system makes antibodies called immunoglobulin E (IgE). These antibodies then cause certain cells to release chemicals (including histamine) into the bloodstream to defend against the allergen «invader.»

It’s the release of these chemicals that causes allergic reactions.

Reactions can affect the eyes, nose, throat, lungs, skin, and gastrointestinal tract. Future exposure to that same allergen will trigger this allergic response again.

Some allergies are seasonal and happen only at certain times of the year (like when pollen counts are high); others can happen anytime someone comes in contact with an allergen. So, when a person with a food allergy eats that specific food or someone who’s allergic to dust mites is exposed to them, they will own an allergic reaction.

How Are Allergies Treated?

There’s no cure for allergies, but symptoms can be managed.

The best way to manage with them is to avoid the allergens. That means that parents must educate their kids early and often, not only about the allergy itself, but also about the reactions they can own if they consume or come into contact with the allergen.

Telling every caregivers (childcare staff, teachers, family members, parents of your child’s friends, etc.) about your child’s allergy is also important.

If avoiding environmental allergens isn’t possible or doesn’t assist, doctors might prescribe medicines, including antihistamines, eye drops, and nasal sprays.

(Many of these also are available without a prescription.)

In some cases, doctors recommend allergy shots(immunotherapy) to assist desensitize a person to an allergen. But allergy shots are only helpful for allergens such as dust, mold, pollens, animals, and insect stings. They’re not used for food allergies.

Airborne Allergies

To assist kids avoid airborne allergens:

  1. Clean when your kid is not in the room.
  2. Don’t hang heavy drapes and get rid of other items that permit dust to build up.
  3. Use special covers to seal pillows and mattresses if your kid is allergic to dust mites.
  4. If your kid has a pollen allergy, hold the windows closed when pollen season is at its peak, own your kid take a bath or shower and change clothes after being outdoors, and don’t let him or her mow the lawn.
  5. Keep family pets out of your child’s bedroom.
  6. Remove carpets or rugs from your child’s room (hard floors don’t collect dust as much as carpets do).
  7. Keep kids who areallergic to mold away fromdamp areas, such as some basements, and hold bathrooms and other mold-prone areas clean and dry.

Common Airborne Allergens

Some of the most common things people are allergic to are airborne (carried through the air):

  1. Moldsare fungi that thrive both indoors and exterior in warm, moist environments.

    Outdoors, molds can be found in poor drainage areas, such as in piles of rotting leaves or compost piles. Indoors, molds thrive in dark, poorly ventilated places such as bathrooms and damp basements. Molds tend to be seasonal, but some can grow year-round, especially those indoors.

  2. Pollen is a major cause of allergies (a pollen allergy is often calledhay fever or rose fever). Trees, weeds, and grasses release these tiny particles into the air to fertilize other plants. Pollen allergies are seasonal, and the type of pollen someone is allergic to determines when symptoms happen.

    Pollen counts measure how much pollen is in the air and can assist people with allergies predict how bad their symptoms might be on any given day.

    Pollen counts are generally higher in the morning and on warm, dry, breezy days, and lowest when it’s chilly and wet.

  3. Pet allergens are caused by pet dander (tiny flakes of shed skin) and animal saliva. When pets lick themselves, the saliva gets on their fur or feathers. As the saliva dries, protein particles become airborne and work their way into fabrics in the home. Pet urine also can cause allergies in the same way when it gets on airborne fur or skin, or when a pet pees in a spot that isn’t cleaned.
  4. Dust mites are microscopic insects that live every around us and feed on the millions of dead skin cells that drop off our bodies every day.

    They’re the main allergic component of home dust. Dust mites are present year-round in most parts of the United States and live in bedding, upholstery, and carpets.

  5. Cockroaches are also a major household allergen, especially in inner cities. Exposure to cockroach-infested buildings may be a major cause of the high rates of asthma in inner-city kids.

Common Food Allergens

Up to 2 million, or 8%, of kids in the United States are affected by food allergies.

Eight foods account for most of those: cow’s milk, eggs, fish and shellfish, peanuts and tree nuts, soy, and wheat.

  1. Peanuts and tree nuts. Peanut allergies are on the rise, and as are allergies to tree nuts, such as almonds, walnuts, pecans, hazelnuts, and cashews. Most people do not outgrow peanut or tree nut allergies.
  2. Eggs. Egg allergy can be a challenge for parents.

    Eggs are used in numerous of the foods kids eat — and in numerous cases they’re «hidden» ingredients. Kids tend to outgrow egg allergies as they get older.

  3. Fish and shellfish. These allergies are some of the more common adult food allergies and ones that people generally don’t outgrow. Fish and shellfish are from diverse families of food, so having an allergy to one does not necessarily mean someone will be allergicto the other.
  4. Soy. Soy allergy is more common among babies than older kids.

    Numerous infants who are allergic to cow’s milk are also allergic to the protein in soy formulas. Soy proteins are often a hidden ingredient in prepared foods.

  5. Cow’s milk(or cow’s milk protein). Between 2% and 3% of children younger than 3 years ancient are allergic to the proteins found in cow’s milk and cow’s milk-based formulas. Most formulas are cow’s milk-based. Milk proteins also can be a hidden ingredient in prepared foods. Numerous kids outgrow milk allergies.
  6. Wheat. Wheat proteins are found in numerous foods, and some are more obvious than others.

    Although wheat allergy is often confused with celiac disease, there is a difference. Celiac disease is a sensitivity to gluten (found in wheat, rye, and barley). But a wheat allergy can do more than make a person feel ill — love other food allergies, it also can cause a life-threatening reaction.

Food Allergies

Kids with food allergies must completely avoid products made with their allergens. This can be tough as allergens are found in numerous unexpected foods and products.

Always read labels to see if a packaged food contains your child’s allergen. Manufacturers of foods sold in the United States must state in understandable language whether foods contain any of the top eight most common allergens.

This label requirement makes things a little easier. But it’s significant to remember that «safe» foods could become unsafe if food companies change ingredients, processes, or production locations.

Cross-contamination means that the allergen is not one of the ingredients in a product, but might own come into contact with it during production or packaging. Companies are not required to label for cross-contamination risk, though some voluntarily do so.

You may see statements such as «May contain…,» «Processed in a facility that also processes…,» or «Manufactured on equipment also used for ….»

Because products without such statements also might be cross-contaminated and the company did not label for it, it’s always best to contact the company to see if the product could contain your child’s allergen. Glance for this information on the company’s website or email a company representative.

Cross-contamination also can happen at home or in restaurants when kitchen surfaces or utensils are used for diverse foods.

What is a Food Allergy?

There Are Diverse Types of Allergic Reactions to Foods

After about 15 minutes, if a lump surrounded by a reddish area (like a mosquito bite) appears at the site, the test is positive.

Blood tests may be done instead for kids with skin conditions, those who are on certain medicines, or those who are extremely sensitive to a specific allergen.

Even if testing shows an allergy, a kid also must own symptoms to be diagnosed with an allergy.

For example, a toddler who has a positive test for dust mites and sneezes a lot while playing on the floor would be considered allergic to dust mites.

Severe allergic reaction (anaphylaxis)

In rare cases, an allergy can lead to a severe allergic reaction, called anaphylaxis or anaphylactic shock, which can be life threatening.

This affects the whole body and usually develops within minutes of exposure to something you’re allergic to.

Signs of anaphylaxis include any of the symptoms above, as well as:

Anaphylaxis is a medical emergency that requires immediate treatment.

Read more about anaphylaxis for information about what to do if it occurs.

Sheet final reviewed: 22 November 2018
Next review due: 22 November 2021

What Are Allergies?

Allergies are abnormal immune system reactions to things that are typically harmless to most people. When a person is allergic to something, the immune system mistakenly believes that this substance is harming the body.

Substances that cause allergic reactions — such as some foods, dust, plant pollen, or medicines — are known as allergens.

Allergies are a major cause of illness in the United States.

Up to 50 million Americans, including millions of kids, own some type of allergy. In fact, allergies cause about 2 million missed school days each year.

How Do Allergies Happen?

An allergy happens when the immune system& overreacts to an allergen, treating it as an invader and trying to fight it off. This causes symptoms that can range from annoying to serious or even life-threatening.

In an attempt to protect the body, the immune system makes antibodies called immunoglobulin E (IgE).

These antibodies then cause certain cells to release chemicals (including histamine) into the bloodstream to defend against the allergen «invader.»

It’s the release of these chemicals that causes allergic reactions. Reactions can affect the eyes, nose, throat, lungs, skin, and gastrointestinal tract. Future exposure to that same allergen will trigger this allergic response again.

Some allergies are seasonal and happen only at certain times of the year (like when pollen counts are high); others can happen anytime someone comes in contact with an allergen.

So, when a person with a food allergy eats that specific food or someone who’s allergic to dust mites is exposed to them, they will own an allergic reaction.

How Are Allergies Treated?

There’s no cure for allergies, but symptoms can be managed. The best way to manage with them is to avoid the allergens. That means that parents must educate their kids early and often, not only about the allergy itself, but also about the reactions they can own if they consume or come into contact with the allergen.

Telling every caregivers (childcare staff, teachers, family members, parents of your child’s friends, etc.) about your child’s allergy is also important.

If avoiding environmental allergens isn’t possible or doesn’t assist, doctors might prescribe medicines, including antihistamines, eye drops, and nasal sprays.

(Many of these also are available without a prescription.)

In some cases, doctors recommend allergy shots(immunotherapy) to assist desensitize a person to an allergen. But allergy shots are only helpful for allergens such as dust, mold, pollens, animals, and insect stings. They’re not used for food allergies.

Airborne Allergies

To assist kids avoid airborne allergens:

  1. Clean when your kid is not in the room.
  2. Don’t hang heavy drapes and get rid of other items that permit dust to build up.
  3. Use special covers to seal pillows and mattresses if your kid is allergic to dust mites.
  4. If your kid has a pollen allergy, hold the windows closed when pollen season is at its peak, own your kid take a bath or shower and change clothes after being outdoors, and don’t let him or her mow the lawn.
  5. Keep family pets out of your child’s bedroom.
  6. Remove carpets or rugs from your child’s room (hard floors don’t collect dust as much as carpets do).
  7. Keep kids who areallergic to mold away fromdamp areas, such as some basements, and hold bathrooms and other mold-prone areas clean and dry.

Common Airborne Allergens

Some of the most common things people are allergic to are airborne (carried through the air):

  1. Moldsare fungi that thrive both indoors and exterior in warm, moist environments.

    Outdoors, molds can be found in poor drainage areas, such as in piles of rotting leaves or compost piles. Indoors, molds thrive in dark, poorly ventilated places such as bathrooms and damp basements. Molds tend to be seasonal, but some can grow year-round, especially those indoors.

  2. Pollen is a major cause of allergies (a pollen allergy is often calledhay fever or rose fever). Trees, weeds, and grasses release these tiny particles into the air to fertilize other plants. Pollen allergies are seasonal, and the type of pollen someone is allergic to determines when symptoms happen.

    Pollen counts measure how much pollen is in the air and can assist people with allergies predict how bad their symptoms might be on any given day. Pollen counts are generally higher in the morning and on warm, dry, breezy days, and lowest when it’s chilly and wet.

  3. Pet allergens are caused by pet dander (tiny flakes of shed skin) and animal saliva. When pets lick themselves, the saliva gets on their fur or feathers.

    As the saliva dries, protein particles become airborne and work their way into fabrics in the home. Pet urine also can cause allergies in the same way when it gets on airborne fur or skin, or when a pet pees in a spot that isn’t cleaned.

  4. Dust mites are microscopic insects that live every around us and feed on the millions of dead skin cells that drop off our bodies every day. They’re the main allergic component of home dust. Dust mites are present year-round in most parts of the United States and live in bedding, upholstery, and carpets.
  5. Cockroaches are also a major household allergen, especially in inner cities.

    Exposure to cockroach-infested buildings may be a major cause of the high rates of asthma in inner-city kids.

Common Food Allergens

Up to 2 million, or 8%, of kids in the United States are affected by food allergies. Eight foods account for most of those: cow’s milk, eggs, fish and shellfish, peanuts and tree nuts, soy, and wheat.

  1. Peanuts and tree nuts. Peanut allergies are on the rise, and as are allergies to tree nuts, such as almonds, walnuts, pecans, hazelnuts, and cashews. Most people do not outgrow peanut or tree nut allergies.
  2. Eggs. Egg allergy can be a challenge for parents.

    Eggs are used in numerous of the foods kids eat — and in numerous cases they’re «hidden» ingredients. Kids tend to outgrow egg allergies as they get older.

  3. Fish and shellfish. These allergies are some of the more common adult food allergies and ones that people generally don’t outgrow. Fish and shellfish are from diverse families of food, so having an allergy to one does not necessarily mean someone will be allergicto the other.
  4. Soy. Soy allergy is more common among babies than older kids. Numerous infants who are allergic to cow’s milk are also allergic to the protein in soy formulas. Soy proteins are often a hidden ingredient in prepared foods.
  5. Cow’s milk(or cow’s milk protein). Between 2% and 3% of children younger than 3 years ancient are allergic to the proteins found in cow’s milk and cow’s milk-based formulas.

    Most formulas are cow’s milk-based. Milk proteins also can be a hidden ingredient in prepared foods. Numerous kids outgrow milk allergies.

  6. Wheat. Wheat proteins are found in numerous foods, and some are more obvious than others. Although wheat allergy is often confused with celiac disease, there is a difference. Celiac disease is a sensitivity to gluten (found in wheat, rye, and barley). But a wheat allergy can do more than make a person feel ill — love other food allergies, it also can cause a life-threatening reaction.

Food Allergies

Kids with food allergies must completely avoid products made with their allergens.

This can be tough as allergens are found in numerous unexpected foods and products.

Always read labels to see if a packaged food contains your child’s allergen. Manufacturers of foods sold in the United States must state in understandable language whether foods contain any of the top eight most common allergens. This label requirement makes things a little easier. But it’s significant to remember that «safe» foods could become unsafe if food companies change ingredients, processes, or production locations.

Cross-contamination means that the allergen is not one of the ingredients in a product, but might own come into contact with it during production or packaging.

Companies are not required to label for cross-contamination risk, though some voluntarily do so. You may see statements such as «May contain…,» «Processed in a facility that also processes…,» or «Manufactured on equipment also used for ….»

Because products without such statements also might be cross-contaminated and the company did not label for it, it’s always best to contact the company to see if the product could contain your child’s allergen.

Glance for this information on the company’s website or email a company representative.

Cross-contamination also can happen at home or in restaurants when kitchen surfaces or utensils are used for diverse foods.

What is a Food Allergy? There Are Diverse Types of Allergic Reactions to Foods


Main allergy symptoms

Common symptoms of an allergic reaction include:

  1. a raised, itchy, red rash (hives)
  2. wheezing, chest tightness, shortness of breath and a cough
  3. swollen lips, tongue, eyes or face
  4. tummy pain, feeling ill, vomiting or diarrhoea
  5. sneezing and an itchy, runny or blocked nose (allergic rhinitis)
  6. itchy, red, watering eyes (conjunctivitis)
  7. dry, red and cracked skin

The symptoms vary depending on what you’re allergic to and how you come into contact with it.

For example, you may have a runny nose if exposed to pollen, develop a rash if you own a skin allergy, or feel sick if you eat something you’re allergic to.

See your GP if you or your kid might own had an allergic reaction to something. They can assist determine whether the symptoms are caused by an allergy or another condition.

Read more about diagnosing allergies.


If your kid has symptoms after eating certain foods, he or she may own a food allergy.

A food allergy occurs when the body’s immune system sees a certain food as harmful and reacts by causing symptoms. This is an allergic reaction. Foods that cause allergic reactions are allergens.

IgE Mediated Food Allergies

The IgE mediated food allergies most common in infants and children are eggs, milk, peanuts, tree nuts, soy and wheat.

The allergic reaction can involve the skin, mouth, eyes, lungs, heart, gut and brain. Some of the symptoms can include:

  1. Stomach pain, vomiting, diarrhea
  2. Shortness of breath, trouble breathing, wheezing
  3. Feeling love something terrible is about to happen
  4. Immunoglobulin E (IgE) mediated. Symptoms result from the body’s immune system making antibodies called Immunoglobulin E (IgE) antibodies. These IgE antibodies react with a certain food.
  5. Skin rash, itching, hives
  6. Swelling of the lips, tongue or throat
  7. Non-IgE mediated. Other parts of the body’s immune system react to a certain food.

    This reaction causes symptoms, but does not involve an IgE antibody. Someone can own both IgE mediated and non-IgE mediated food allergies.

Sometimes allergy symptoms are mild. Other times they can be severe. Take every allergic symptoms seriously. Mild and severe symptoms can lead to a serious allergic reaction called anaphylaxis (anna-fih-LACK-sis). This reaction generally involves more than one part of the body and can get worse quick. Anaphylaxis must be treated correct away to provide the best chance for improvement and prevent serious, potentially life-threatening complications.

Treat anaphylaxis with epinephrine.

What can allergies cause symptoms

This medicine is safe and comes in an easy-to-use device called an auto-injector. You can’t rely on antihistamines to treat anaphylaxis. The symptoms of an anaphylactic reaction happen shortly after contact with an allergen. In some individuals, there may be a delay of two to three hours before symptoms first appear.

Cross-Reactivity and Oral Allergy Syndrome

Having an IgE mediated allergy to one food can mean your kid is allergic to similar foods.

For example, if your kid is allergic to shrimp, he or she may be allergic to other types of shellfish, such as crab or crayfish. Or if your kid is allergic to cow’s milk, he or she may also be allergic to goat’s and sheep’s milk. The reaction between diverse foods is called cross-reactivity. This happens when proteins in one food are similar to the proteins in another food.

Cross-reactivity also can happen between latex and certain foods. For example, a kid who has an allergy to latex may also own an allergy to bananas, avocados, kiwis or chestnuts.

Some people who own allergies to pollens, such as ragweed and grasses, may also be allergic to some foods.

Proteins in the pollens are love the proteins in some fruits and vegetables. So, if your kid is allergic to ragweed, he or she may own an allergic reaction to melons and bananas. That’s because the protein in ragweed looks love the proteins in melons and bananas. This condition is oral allergy syndrome.

Symptoms of an oral allergy syndrome include an itchy mouth, throat or tongue. Symptoms can be more severe and may include hives, shortness of breath and vomiting. Reactions generally happen only when someone eats raw food.

In rare cases, reactions can be life-threatening and need epinephrine.

Two Categories of Food Allergies

  • Immunoglobulin E (IgE) mediated. Symptoms result from the body’s immune system making antibodies called Immunoglobulin E (IgE) antibodies. These IgE antibodies react with a certain food.
  • Non-IgE mediated. Other parts of the body’s immune system react to a certain food. This reaction causes symptoms, but does not involve an IgE antibody.

    Someone can own both IgE mediated and non-IgE mediated food allergies.

Non-IgE Mediated Food Allergies

Most symptoms of non-IgE mediated food allergies involve the digestive tract. Symptoms may be vomiting and diarrhea. The symptoms can take longer to develop and may final longer than IgE mediated allergy symptoms. Sometimes, a reaction to a food allergen occurs up 3 days after eating the food allergen.

When an allergic reaction occurs with this type of allergy, epinephrine is generally not needed.

What can allergies cause symptoms

In general, the best way to treat these allergies is to stay away from the food that causes the reaction. Under are examples of conditions related to non-IgE mediated food allergies.

Not every children who react to a certain food own an allergy. They may own food intolerance. Examples are lactose intolerance, gluten intolerance, sulfite sensitivity or dye sensitivity. Staying away from these foods is the best way to avoid a reaction. Your child’s doctor may propose other steps to prevent a reaction.

If your kid has any food allergy symptoms, see your child’s doctor or allergist. Only a doctor can properly diagnose whether your kid has an IgE- or non-IgE food allergy. Both can be present in some children.

Eosinophilic Esophagitis (EoE)

Eosinophilic (ee-uh-sin-uh-fil-ik) esophagitis is an inflamed esophagus. The esophagus is a tube from the throat to the stomach. An allergy to a food can cause this condition.

With EoE, swallowing food can be hard and painful. Symptoms in infants and toddlers are irritability, problems with eating and poor weight acquire. Older children may own reflux, vomiting, stomach pain, chest pain and a feeling love food is “stuck” in their throat.

The symptoms can happen days or even weeks after eating a food allergen.

EoE is treated by special diets that remove the foods that are causing the condition. Medication may also be used to reduce inflammation.

Food Protein-Induced Enterocolitis Syndrome (FPIES)

FPIES is another type of food allergy. It most often affects young infants. Symptoms generally don’t appear for two or more hours.

Symptoms include vomiting, which starts about 2 hours or later after eating the food causing the condition. This condition can also cause diarrhea and failure to acquire weight or height. Once the baby stops eating the food causing the allergy, the symptoms go away. Rarely, severe vomiting and diarrhea can happen which can lead to dehydration and even shock. Shock occurs when the body is not getting enough blood flow. Emergency treatment for severe symptoms must happen correct away at a hospital. The foods most likely to cause a reaction are dairy, soy, rice, oat, barley, green beans, peas, sweet potatoes, squash and poultry.

Allergic Proctocolitis

Allergic proctocolitis is an allergy to formula or breast milk.

What can allergies cause symptoms

This condition inflames the lower part of the intestine. It affects infants in their first year of life and generally ends by age 1 year.

The symptoms include blood-streaked, watery and mucus-filled stools. Infants may also develop green stools, diarrhea, vomiting, anemia (low blood count) and fussiness. When properly diagnosed, symptoms resolve once the offending food(s) are removed from the diet.

Medical review December 2014.

Allergies to cacao (the bean that is the main ingredient in chocolate) are possible, but they're incredibly rare — so rare that they don't even show up in recent medical literature.

What can allergies cause symptoms

Therefore, if you've experienced food allergy symptoms after eating chocolate, you can safely assume that another ingredient in the chocolate is causing your symptoms unless testing shows otherwise.

If you do experience allergy symptoms, call your doctor as soon as possible to discuss testing. Symptoms of anaphylaxis represent an emergency; take epinephrine immediately, if available, and call for an ambulance.

Non-IgE Mediated Food Allergies

Most symptoms of non-IgE mediated food allergies involve the digestive tract.

Symptoms may be vomiting and diarrhea. The symptoms can take longer to develop and may final longer than IgE mediated allergy symptoms. Sometimes, a reaction to a food allergen occurs up 3 days after eating the food allergen.

When an allergic reaction occurs with this type of allergy, epinephrine is generally not needed. In general, the best way to treat these allergies is to stay away from the food that causes the reaction. Under are examples of conditions related to non-IgE mediated food allergies.

Not every children who react to a certain food own an allergy.

They may own food intolerance. Examples are lactose intolerance, gluten intolerance, sulfite sensitivity or dye sensitivity. Staying away from these foods is the best way to avoid a reaction. Your child’s doctor may propose other steps to prevent a reaction. If your kid has any food allergy symptoms, see your child’s doctor or allergist. Only a doctor can properly diagnose whether your kid has an IgE- or non-IgE food allergy.

Both can be present in some children.

Eosinophilic Esophagitis (EoE)

Eosinophilic (ee-uh-sin-uh-fil-ik) esophagitis is an inflamed esophagus. The esophagus is a tube from the throat to the stomach. An allergy to a food can cause this condition.

With EoE, swallowing food can be hard and painful. Symptoms in infants and toddlers are irritability, problems with eating and poor weight acquire. Older children may own reflux, vomiting, stomach pain, chest pain and a feeling love food is “stuck” in their throat. The symptoms can happen days or even weeks after eating a food allergen.

EoE is treated by special diets that remove the foods that are causing the condition.

Medication may also be used to reduce inflammation.

Food Protein-Induced Enterocolitis Syndrome (FPIES)

FPIES is another type of food allergy. It most often affects young infants. Symptoms generally don’t appear for two or more hours. Symptoms include vomiting, which starts about 2 hours or later after eating the food causing the condition. This condition can also cause diarrhea and failure to acquire weight or height. Once the baby stops eating the food causing the allergy, the symptoms go away. Rarely, severe vomiting and diarrhea can happen which can lead to dehydration and even shock.

Shock occurs when the body is not getting enough blood flow. Emergency treatment for severe symptoms must happen correct away at a hospital. The foods most likely to cause a reaction are dairy, soy, rice, oat, barley, green beans, peas, sweet potatoes, squash and poultry.

Allergic Proctocolitis

Allergic proctocolitis is an allergy to formula or breast milk. This condition inflames the lower part of the intestine. It affects infants in their first year of life and generally ends by age 1 year.

The symptoms include blood-streaked, watery and mucus-filled stools. Infants may also develop green stools, diarrhea, vomiting, anemia (low blood count) and fussiness.

When properly diagnosed, symptoms resolve once the offending food(s) are removed from the diet.

Medical review December 2014.

Allergies to cacao (the bean that is the main ingredient in chocolate) are possible, but they're incredibly rare — so rare that they don't even show up in recent medical literature. Therefore, if you've experienced food allergy symptoms after eating chocolate, you can safely assume that another ingredient in the chocolate is causing your symptoms unless testing shows otherwise.

If you do experience allergy symptoms, call your doctor as soon as possible to discuss testing.

Symptoms of anaphylaxis represent an emergency; take epinephrine immediately, if available, and call for an ambulance.


Why You Might Own Allergy Symptoms After Eating Chocolate

One reason so numerous people experience allergy and food intolerance symptoms after eating chocolate is that chocolates often contain foods that are problematic for people.

Here are some common allergens you can discover in chocolate:

  1. Soy: Technically, chocolate is an emulsion (a mixture of two liquids that would otherwise separate), and just love mayonnaise and shelf-stable salad dressings, it generally includes an emulsifier to hold it solid at room temperature.

    Among the most common is soy lecithin, which is problematic for numerous people with soy allergies. This should be listed clearly on food labels.

  2. Peanuts and Tree Nuts: Obviously, some chocolates are filled with peanut butter or with whole nuts. But even chocolates that don't include peanuts or tree nuts as ingredients can be problematic for people with peanut allergies or tree nut allergies because manufacturers that make chocolate assortments containing nuts often make every of their chocolates on the same manufacturing line.

    Labeling rules do not require manufacturers to mention this on food labels, so always call manufacturers before eating high-risk foods love chocolates. You can also purchase chocolate from nut-free manufacturers love Vermont Nut-Free, or glance for label indications love "manufactured in a dedicated nut-free facility."

  3. Wheat and Gluten: The same issues that apply to peanuts and tree nuts also affect people with wheat allergies and celiac disease.

    Filled chocolates often use flour or wheat starch as a binder, and crisped rice can be problematic for celiacs because it often includes barley malt. Gluten-free chocolatiers include Endangered Species Chocolate and Equal Exchange.

  4. Corn: Corn is incredibly hard to avoid in the industrial food supply, and chocolate is no exception. In addition to high-fructose corn syrup in some chocolate brands, some manufacturers may use corn on production lines. Be especially alert for the presence of corn in white chocolate.
  5. Milk:Dairy allergies are extremely common, especially in children, and almost every chocolate contains at least some milk.

    If you're lactose intolerant and can tolerate little amounts of dairy products, attempt bittersweet, semisweet, or dark chocolate: Those chocolates are required by law to contain a higher percentage of chocolate liquor and, therefore, will own less milk and sugar. Dairy-free chocolates are on the market from brands love Tropical Source, Amanda's Own, Premium Chocolatiers, and Chocolate Decadence.

  6. Berries: Berries are among the more common allergenic fruits.

    Be careful of assortments; no matter how carefully you read the legend indicating which type of chocolate is located where in the box, it's too simple for pieces to get mixed up.

Always double-check labels on anything you purchase, since manufacturing practices can change without warning.


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