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Doctor insights on: Allergy

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What is allergy?

What is allergy?

Allergy: Is an exaggerated immunological reaction (sneezing, difficulty breathing, itching, skin rash) to substances (pollen, animal dander), situations or physical states that do not produce similar effects in most people. It can also be defined as altered bodily reactivity to an antigen when a person is first exposed, such as to bee venom, that is so severe that a second sting may be fatal. Hope this helps ...Read more

Dr. John Chiu
2,638 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 are allergies?

What are allergies?

See detail: Allergies are caused when a person makes an allergic antibody known as immunoglobulin e against a protein. This protein can be a food, pollen, mold, or medication. Allergic reactions can cause itching, swelling, redness in eyes, nasal passages, skin, GI tract, and in the lungs. ...Read more

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What is an allergy?

What is an allergy?

Abnormal reaction: An allergy is an abnormal, incorrect reaction of the immune system against substances we are exposed to in our environment. This includes environmental exposures, foods, drugs, etc.
Allergies must be differentiated from other reactions not mediated specifically through the immune system including irritants, intolerance, etc. In general, allergy involves the respiratory tract, skin, or GI system. ...Read more

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What causes allergy?

What causes allergy?

Immune reaction: Your immune system normally makes igg antibodies that recognize foreign proteins. In patients with allergy, the immune system switches to making a ige antibodies for certain proteins. The ige antibodies act as a detector of the specific protein that they are made to react with and trigger the allergic response when they come in contact with that protein. ...Read more

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Poly allergy syndrom?

Poly allergy syndrom?

Allergies: As a doctor, if I heard this it simply makes me think (1) you have allergies, asthma, eczema, etc.... Or (2) you have multiple allergies to pollens, medications, foods, stinging insects, etc... ...Read more

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Can allergy be cured?

Can allergy be cured?

Controlled: Allergy can be controlled with avoidance of known sources of allergy (pets, pollen, etc), medication taken consistently, and perhaps allergy shots. However we are not able to "cure allergy" but these measures help restore a good quality of life. ...Read more

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Symptoms of allergies?

Symptoms of allergies?

Allergy symptoms: Allergies can cause a large variety of symptoms: most common is hay fever (molds, dust, pollen) with watery runny nose, watery eyes & itching, nasal itch, sneezing, and congestion. Plant/tree/grass allergies can cause eczema, a skin rash, as can food allergies. Aerosolized allergens (pet dander, pollen, etc.) can cause asthma with chest tightness and wheezing. ...Read more

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Can allergy be treated?

Can allergy be treated?

Yes: The most important treatment for allergies is identification and avoidance as possible. For environmental allergies, new generation antihistamines, nasal steroid sprays and allergy injections are current standard of care. Food allergy treatment is avoidance and Epinephrine in case of an accidental exposure. Research is being done on food oral desensitization, but not yet ready for "prime time". ...Read more

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Are allergies inherited?

Are allergies inherited?

Yes.: Yes, we do see allergies in families. Your risk of allergies increases if one parent has allergies, and is even higher if both parents suffer from allergies. Interestingly, we are seeing that exposure to allergens may also play a part in the development of allergies in children. Rural areas, with high levels of plant and animal allergens, actually have lower levels of allergic disease in kids. ...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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Can I outgrow my allergies?

Can I outgrow my allergies?

Yes: It is possible to outgrow any allergy, though some are more likely than others. ...Read more

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Could I inherit an allergy?

Could I inherit an allergy?

Yes: The tendency to develop allergies does run in families although each family member can be affected differently. ...Read more

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Can cat allergies be serious?

Can cat allergies be serious?

Depends: Any allergen can cause a range of symptoms from mild to severe and life threatening. Cat would be included in that as well. Cats can cause mild nasal congestion to severe persistent asthma that can be life threatening. If you are having symptoms around a cat talk with you pcp or allergist. There are good treatment options available to help you. ...Read more

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Does dolfenal causes allergy?

Does dolfenal causes allergy?

NSAIDs: Dolfenal contains Mefenamic Acid which is an NSAID (nonsteroid anti-inflammatory drug) in the same general class as Ibuprofen or aspirin. Some people can have severe allergic reactions to these medications leading to hives, asthma or even anaphylaxis. If a person is allergic to aspirin, Ibuprofen or other nsaids talk with your doctor first. ...Read more

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How common are dog allergies?

How common are dog allergies?

Common: Allergic rhinitis including allergy to dogs is common, affecting 10-30% of people in the U.S. Rates seems to be increasing over time, particularly in urban areas. These statistic include all allergy sufferers (trees, grass, weeds, dust mites, molds, cats, dogs, etc). I don't have rates for dog allergy sufferers specifically. ...Read more

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Why are fall allergies so bad?

Why are fall allergies so bad?

Ragweed & Mold: Allergy problems are often worse in the fall because of weed pollen such as ragweed. In addition, mold is worse in the fall because decaying plant material such as all summer's grass clipping and falling leaves. Ragweed is a potent allergen for those who are allergic to it and can cause fairly severe symptoms. The combo of weed pollen and mold is a double whammy. ...Read more

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What are good allergy reliefs?

Allergen avoidance: The best one off course is to avoid the allergen completely if you can. Many times, you can't either because you don't know the allergen or you can't really avoid the allergen. So, in that case, you can try otc medication like anti histamin (benadryl) or other medication like claritin, (loratadine) zyrtec, allergra etc. Try one- see which one works better for you. Discuss further with your doctor. ...Read more

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Can allergies cause dizzyness?

Yes possible: But first see your doctor to rule out other serious problems for dizziness before you visit allergy specialist. ...Read more

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Why do you develop an allergy?

Why do you develop an allergy?

Genetics: Simple answer: most who develop allergy it is because of genetics and environmental exposure to allergens. In reality it is much more complex than this. ...Read more

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Can I mix allergy medications?

Careful: Some allergy medications such as Benadryl (diphenhydramine) and zyrtec are sedating and together may be too sedating to function. Mixing allergy medications is best prescribed under the supervision of an allergist to avoid side effects. It depends what you are trying to treat, usually one second generation antihistamine is enough to treat nasal allergies. Other medications can be used for other symptoms. ...Read more

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What causes an allergy attack?

Acute allergy.: There are actually different types like the delayed ones. The common ones are the acute allergic reaction. You have allergy cells (eosinophils, basophils, mast) with receptors on the surface. The allergen (the cause) binds to those receptors, the cells lyse, recruit other cells, but the contents cause the blood vessels and surrounding tissue to react and cause the wheal and flare reaction. ...Read more

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