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Doctor insights on: What Is A Food Allergy

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What is a food allergy?

What is a food allergy?

Reaction to a food.: People can become allergic to many substances including certain foods. Some foods are more likely, such as milk, egg, wheat, soybean, shellfish, peanut, or nuts. Reactions can range from rash and itching to anaphylactic shock. ...Read more

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Dr. John Chiu
2,648 doctors shared insights

Allergies (Definition)

Allergies occur when your immune system is triggered by envirionmental factors it should ignore--for example, pollen in the air, or dander on a cat or dog--and creates cells to fight against them. An allergic reaction typically causes itching, congestion, or drainage, and ...Read more


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What is a food allergy?

What is a food allergy?

Immunologic response: A food allergy is a specific immunologic response that your body has to a food that can lead to various symptoms. This is different from a food intolerance, such as excess gas, nausea or diarrhea. ...Read more

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What exactly is a food intolerance?

What exactly is a food intolerance?

Food intolerance: Food intolerance is a generic term that has had its meaning morphed over time. Food intolerance is any food that a person cannot tolerate. This can be due to allergies, enzyme deficiencies (like lactase deficiency), medication interactions (tetracyclines and milk), uncomfortable feelings (green pepper causing gastic reflux), and somatic (beans causing 'excessive' flatulence). These are just exampl. ...Read more

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What is a nut allergy?

What is a nut allergy?

Allergy to nuts : A nut allergy is an allergic, meaning IgE-based immunological response to foods commonly called nuts, which include peanuts (really legumes), tree nuts like almonds, pecans, walnuts, macadamias, hazelnuts, Brazil nuts, cashews, pistachios, as well as sometimes seeds like sunflower "nuts". Symptoms include itching, hives, swelling, throat closing, flushing, asthma, shock and rarely, death. ...Read more

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What is a grass allergy?

What is a grass allergy?

Like "hay fever": The allergic person breathes in the grass pollen and their body "thinks it is a foreign invader"..It over-reacts and the immune ells release histamine and other chemicals...This causes runny nose itchy eyes sneezing etc. ...Read more

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What is a food challenge?

What is a food challenge?

Controlled exposure : To a food which the practitioner suspects the person had outgrown. For the sake of brevity it is usually performed as an open challenge (as opposed to a single or double blind manner). The food is incrementally increased in dose at a frequency of every 15-30 minutes until a target dose is reached. ...Read more

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Is milk intolerance a food allergy or what?

Is milk intolerance a food allergy or what?

Not allergy: Milk intolerance most commonly refers to a condition characterized by bloating, cramps and diarrhea caused by lactase deficiency without allergy/immune mechanisms involved. In allergy to cow's milk the immune system is reacting against cow's milk proteins causing symptoms such as hives. In infants, may cause blood in stools and constipation. The terms intolerance and allergy are often misused. ...Read more

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What is considered a shrimp allergy?

What is considered a shrimp allergy?

Symptoms: Food allergy reactions include: runny nose, itchiness, rash, hives, lip/tongue/throat swelling, trouble talking, swallowing or breathing, asthma, belly pain, throwing up, passing out and rarely death. ...Read more

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Why is celiacs concidered a disease and not a food allergy? Isn't it just an allergy to gluten?

Why is celiacs concidered a disease and not a food allergy?  Isn't it just an allergy to gluten?

No: Celiac disease is not an allergy. It is a reaction or sensitivity to gliadin in gluten which is contained in wheat, rye, and barley by the small intestine causing a flattening of the inner lining or villi which causes malabsorption of various nutrients leading to a variety of GI and non-gi symptoms. It is thought to be an autoimmune phenomenon as antibodies to body tissue & enzymes are often found. ...Read more

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What exactly is a latex allergy?

What exactly is a latex allergy?

Allergy to Latex: Latex allergies are becoming more common. Usually found in healthcare workers who are around latex gloves/materials. Latex is a natural rubber and has excellent properties but unfortunately as a natural product it can produce antigens that we develop allergies to. ...Read more

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Anyone know what is a symptom of an allergic reaction to tomato?

Anyone know what is a symptom of an allergic reaction to tomato?

Tomato allergy: Rarely, a severe allergic reaction called anaphylaxis can occur after eating tomato. More commonly are less severe reactions such as hives or swelling. This may include GI symptoms of pain and cramping. True tomato allergy is very unusual but does exist. ...Read more

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What is the medical term for a food allergy?

What is the medical term for a food allergy?

Medical term: There are several. Most allergists just say food allergy. If you want to get more specific you could say "IgE mediated food hypersensitivity". That would distinguish between a food allergy and another type of food reaction such as lactose intolerance which would not be classified as an allergy. ...Read more

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What is a milk or dairy allergy like?

What is a milk or dairy allergy like?

Varies: Milk allergy can present with a variety of symptoms including: rash, hives, itchiness, lip/tongue/throat swelling, trouble breathing, belly pain, vomiting and rarely death. ...Read more

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Help! exactly what is the raw food allergy called?

Help! exactly what is the raw food allergy called?

Depends: The most common symptom would be no symptoms at all. Metastatic melanoma is often picked up on imaging. Symptoms can occur depending on the location of the lesions. Neurological symptoms for brain mets, bleeding or obstruction for GI mets, possible pulmonary symptoms for lung mets. ...Read more

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What is the best food allergy test?

What is the best food allergy test?

Skin Prick Testing: Food allergies are diagnosed first by getting a detailed clinical history of reaction. If history is concerning then skin prick testing and/or serum IgE testing to concerning foods will be drawn. Skin prick testing usually done first followed by serum testing to follow sensitivity over time. Prick to prick testing with actual food is also helpful to help clarify risk. See Allergist for details. ...Read more

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What is the difference between a gluten allergy and a gluten intolerance?

What is the difference between a gluten allergy and a gluten intolerance?

Wording issues: You will be intolerant to gluten if you are allergic to it.Your body will have reactions to it and many could be severe. Allergy skin tests and blood tests would be positive. You could be intolerant to gluten but not have typical allergic reactions (hives, difficulty breathing, positive skin and blood tests), but you might have indigestion, constant bloating, intermittent diarrhea, etc. ...Read more

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What is an allergen?

What is an allergen?

Many things: Anything that causes an allergic reaction, usually an ige mediated reaction. Spring pollen allergens are tree pollens and molds. Summer is mostly grass and mold. Fall is ragweed, other weeds, and mold. Year round allergens in the house are dust mites, pet danders, and , wait for it, mold. Common food allergens are peanut, shellfish, nuts, wheat, and others. ...Read more

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What is a popular allergy?

What is a popular allergy?

Poplar maybe?: Poplar is a tree and many people with springtime allergies have allergy to poplar tree pollen. ...Read more

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What sort of disorder is food allergies?

What sort of disorder is food allergies?

Food allergies: Food allergies are immunologic reactions to food proteins mediated by ige. Symptoms can consist of oropharyngeal itchiness, swelling of lips, hives, vomiting and even anaphylaxis. ...Read more

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What is an allergy compared to intolerance?

What is an allergy compared to intolerance?

Immune system: Allergy is caused by an immune response (usually IgE) to a foreign agent- usually a protein. Intolerance is not mediated by an immune system but something unique to that person. Some may be psychological in nature ...Read more

Dr. Heidi Fowler
3,544 doctors shared insights

Nutrition (Definition)

Nutrition is the synergistic combination of nutrients found in food and water that allows the human body to perform all essential ...Read more


Dr. Michael Zacharisen
599 doctors shared insights

Food Allergy (Definition)

An immune system reaction that occurs soon after eating a certain food. This often results in ...Read more