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Doctor insights on: Food Allergy And Anaphylaxis

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Do hives from food allergies always mean anaphylactic reaction?

Do hives from food allergies always mean anaphylactic reaction?

Not always: Hives as a symptom along the continuium of allergic reactions. The concern is that the next time they are exposed to this allergen they may react more severely (anaphylaxis). This is definitely something you want to see your child's doctor about. ...Read more

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Dr. Kristin Sokol
187 doctors shared insights

Anaphylactic Shock (Definition)

Anaphylaxis is a severe, whole-body allergic reaction to a chemical that has become an allergen. After being exposed to a substance such as bee sting venom, the person's immune system becomes sensitized to it. When the person is exposed to that allergen again, an allergic reaction may occur. Anaphylaxis happens quickly after the exposure, is severe, and ...Read more


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How are food allergy and food intolerance different?

Diff erent way fo: Allergy means you get hives, runny nose , may be troule breathing within min to 2 hrs and need to avoid and treatment, intolerance more like upset stomach, gassy stomach ache, e.G milk allergy avoid for 2 yrs might out grow, lactose intolerance forget about milk. ...Read more

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Prednisone and food allergies? Is prednisone helpful for a bad food allergy reaction?

Prednisone and food allergies?  Is prednisone helpful for a bad food allergy reaction?

Less so: The best treatment for food allergies defined as having symptoms after ingesting certain foods (and not just having a blood testing stating food allergy is present) is first and foremost, avoidance and secondarily by carrying epipen(jr) which is adrenaline which can be injected into the person's thigh asap after contact with the allergen. Prednisone is much less useful. ...Read more

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Can allergic rhinitis be linked to food intolerances or food allergy?

Can allergic rhinitis be linked to food intolerances or food allergy?

YES: On some occasions I have found kids whose only confirmed allergies were to foods.Removal from their diet resulted in a clearing of airway problems. ...Read more

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Are metabollic food reactions allergic reactions?

Are metabollic food reactions allergic reactions?

No: Food allergic reactions are mediated by the ige allergic antibody. Reactions mediated by metabolic factors occur without an ige antibody, so an allergy skin or blood ige test is not helpful. ...Read more

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Are all anaphylaxis reaction allergy related?

Are all anaphylaxis reaction allergy related?

No answer: The question makes no sense. Try again with a specific question including the details. ...Read more

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Allergic dermatitis and food allergies are closely related?

Allergic dermatitis and food allergies are closely related?

Allergic contact: Allergic contact dermatitis occurs when your skin comes in contact with substances that your skin is sensitive or allergic to. The reaction usually appears within 24-48 hours after exposure to the allergen. Symptoms that are common include redness, itching and swelling. Sometimes blistering and weeping of the skin also develop. What you are allergic to is determined by your genes, not foods. ...Read more

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What are the common reactions to a shrimp and shellfish allergy?

What are the common reactions to a shrimp and shellfish allergy?

Several symptoms: The symptoms of shellfish allergy that occur after ingestion include hives, swelling of the lips/tongue, throat discomfort, itching, shortness of breath, cough, vomiting and diarrhea. ...Read more

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What chemical in shellfish makes people allergic to eating shellfish?

What chemical in shellfish makes people allergic to eating shellfish?

Fish protein allergy: Most allergens are proteins, and the allergens in shellfish that set off allergic people are no exception. These are usually unique to the particular species of fish, but some cross-reactivity is possible. In the case of shrimp, the protein has been identified and it is called tropomyosin. http://www.nytimes.com/1993/12/28/health/studies-unmask-protein-culprit-behind-allergy-to-shrimp.html. ...Read more

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How can seafoods like lobster, crab and squid cause food allergies?

How can seafoods like lobster, crab and squid cause food allergies?

If you are sensitive: If you are sensitive to the proteins in these foods, your body makes antibodies that recognize them and set off an allergic reaction. Most foods have the potential of causing allergies, but a few are more likely and shellfish are among the 8 most common food allergens. ...Read more

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Looking for nut allergies symptoms, eg, cashew allergy?

Looking for nut allergies symptoms, eg, cashew allergy?

Varies: Allergic reactions varies with individuals.Some can consume cashews, while to others they are toxic.Reactions can be mild or severe. Mild reactions include nausea , vomiting, diarrhea. Skin rash and itching on the skin.The eyes , roof of mouth and throat may itch.Severe reactions include difficulty breathing, swelling to face and throat.The most dangerous is anaphylaxis.This can be fatal ...Read more

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How can food allergies to wheat, and peanuts effect me?

Rash or stomach ache: Any true food allergy can cause a range of symptoms..An itchy rash is probably most common..But some people get nausea, diarrhea or if severe, even breathing problems. See an allergist to be tested, so you can verify your symptoms are an allergy(ie. Not an intolerance or other problem) and to help determine how severe an allergy you have. ...Read more

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Is sorbic acid allergy related to other food allergens?

Is sorbic acid allergy related to other food allergens?

Potassium sorbate: Sorbic acid can cross-react with potassium sorbate. It is a rare cause of contact dermatitis (a rash) or contact urticarial (hives). ...Read more

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What's the difference between food allergy and food intolerance?

Mechanism: Food allergies are mediated by the ige antibody and it takes only a small amount to lead to a severe even anaphylactic allergic reaction and rarely death. Food intolerance is GI symptoms of bloating, gassy, crampy belly pain and diarrhea after eating usually larger amounts of a food. Intolerances are more common (like lactose intolerance) and are not mediated by ige antibody and not life ending. ...Read more

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Can people with bee allergies eat honey? What about peanut allergies and peanut oil?

Can people with bee allergies eat honey?  What about peanut allergies and peanut oil?

Yes: There is no bee venom in honey, so it can be safely eaten by people allergic to bees. There is not supposed to be any peanut protein in peanut oil, but there may be if it wasn't carefully manufactured. If you have had a life-threatening reaction to peanut, i wouldn't recommend betting your life on whether the peanut oil is pure. ...Read more

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Dr. John Chiu
2,628 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


Dr. Michael Zacharisen
596 doctors shared insights

Food Allergy (Definition)

Results in a response like diarrhea, vomiting, hives, or anaphylaxis when certain food is eaten. Can also be more subtle and lead to chronic congestion, headaches, ...Read more