Food allergy

Allergy to food; Food allergy - peanuts; Food allergy - soy; Food allergy - fish; Food allergy - shellfish; Food allergy - eggs; Food allergy - milk

A food allergy is type of immune response triggered by eggs, peanuts, milk, shellfish or some other specific food.

What are common symptoms of food allergies?The correct answer is all of the above. Eating something you're allergic to can trigger symptoms ranging from a runny nose to a dangerous full-body reaction. Talk to your doctor if you have any of these symptoms after eating a food, even if it's a small reaction.Food allergy and food intolerance are the same.The correct answer is false. A food allergy occurs when your immune system overreacts to a food and releases the chemical histamine. This causes allergic symptoms. Food intolerance is more common and doesn't involve your immune system. Sometimes it occurs because you can't digest part of a food, such as lactose, a type of sugar in milk. Which is a common food allergy?The correct answer is all of the above. Any food can cause an allergic reaction, but these are the most common. Other common foods include shellfish, soy, and tree nuts.If you eat something you're allergic to, your body will react within:The correct answer is two hours. Rarely, the symptoms may begin several hours after eating the food. Mild symptoms, such as a hive on your chin after eating something, will disappear soon and do not require treatment. However, you should tell your doctor about it. For some people, food allergies can be life-threatening.The correct answer is true. Some people have a severe allergic reaction, called anaphylaxis. This causes a whole-body reaction. Symptoms can start within minutes and may include breathing and swallowing problems, slurred speech, or passing out. If you have any of these symptoms, call 9-1-1 right away.The only proven treatment for a food allergy is to avoid the food.The correct answer is true. If you're allergic to a food, the best way to prevent a reaction is to cut the food from your diet. Other treatments, such as allergy shots and probiotics, don't work to treat food allergies.Many children outgrow their allergy to:The correct answer is eggs. Many children will outgrow their allergy to eggs, milk, wheat, and soy by the time they are 5 years old if they avoid that food when they are young. Allergies to peanuts, tree nuts, and shellfish tend to last a lifetime. To find out if you're still allergic to a food, you should eat a small amount.The correct answer is false. Do not eat a food that caused a reaction in the past without checking with your doctor first. A mild reaction in the past can become a more severe reaction the second or third time you try a food. Your doctor may want to be present when you try the food.People with food allergies should always carry epinephrine.The correct answer is true. Epinephrine is a medicine you can carry with you. It can stop a severe allergic reaction and save your life. It comes in a small syringe that is ready for you to give yourself a shot. If you've had an allergic reaction to food -- even a mild reaction -- talk to your doctor about this medicine.If you begin wheezing after eating a food, you should:The correct answer is to inject epinephrine and then call 9-1-1. Make sure you know how to use it. Also show loved ones how to use it in case you can't inject yourself.Fresh fruits are a common cause of mouth allergies.The correct answer is true. If you have an allergy to fruit, melons, apples, pineapple, and other fruits can cause your lips, tongue and throat to itch – especially if you eat them raw. The more fruit you eat, the more severe the reaction. A more severe reaction is rare.Which of the following may prevent food allergies in children?The correct answer is breastfeeding. Waiting to add allergy-causing foods until your baby is a little older also may help. The timing for this varies from food to food and from baby to baby. Ask your child’s health care provider when is best to start certain foods that commonly cause allergic reactions.

The U.S. Department of Agriculture's newest food guide, called MyPlate, encourages consumers to make healthier food choices. The guide encourages you to make healthy choices and avoid oversized portions. Half your plate should be filled with fruits and vegetables. At least half of your grains should be whole grains. You also should switch to fat-free or low-fat milk.


Anaphylaxis is an acute systemic (whole body) type of allergic reaction which occurs when a person has become sensitized to a certain substance or allergen and is again exposed to the allergen. Some drugs, such as those used for pain relief or for x-rays, may cause an anaphylactoid reaction on first exposure. Histamines and other substances released into the bloodstream cause blood vessels to dilate and tissues to swell. Anaphylaxis may be life threatening if obstruction of the airway occurs, if blood pressure drops, or if heart arrhythmias occur.

Food allergies

The body's immune system normally reacts to the presence of toxins, bacteria or viruses by producing a chemical reaction to fight these invaders. However, sometimes the immune system reacts to ordinarily benign substances such as food or pollen, to which it has become sensitive. This overreaction can cause symptoms from the mild (hives) to the severe (anaphylactic shock) upon subsequent exposure to the substance. An actual food allergy, as opposed to simple intolerance due to the lack of digesting enzymes, is indicated by the production of antibodies to the food allergen, and by the release of histamines and other chemicals into the blood.

Read food labels

Allergic reactions to a certain food can include diffuse hives, hoarse voice, wheezing, and, in severe reactions, low blood pressure and closing down of the windpipe. Medications such as antihistamines and skin creams may provide some relief from itching and rashes, but the best way to prevent future allergic reactions is to avoid the offending food in the first place. Reading the labels contained on most products is a useful way to find a certain food that a person may want to avoid.

Perioral dermatitis

Perioral dermatitis is most common in young to middle age women. Frequently, no specific cause is found. However, there appears to be an association with fluorinated steroids. In children, dermatitis around the mouth may be associated with irritation from specific foods or other materials carried to the face on the hands.


Antigens are large molecules (usually proteins) on the surface of cells, viruses, fungi, bacteria, and some non-living substances such as toxins, chemicals, drugs, and foreign particles. The immune system recognizes antigens and produces antibodies that destroy substances containing antigens.



Exams and Tests


Support Groups

Outlook (Prognosis)

Possible Complications

When to Contact a Medical Professional