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Doctor insights on: Allergy Shots Side Effects

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Dr. John Chiu
2,491 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 side effects of allergy shots? I recently started them for dust, cats, dogs, and grass

What are side effects of allergy shots? I recently started them for dust, cats, dogs, and grass

Several: Local lumps at the injection sites are not uncommon. Rarely you may even have anaphylaxis ( a life-threatening situation which may manifest as breathing trouble, fainting, shock, itching, hives , vomiting etc) and thus you must stay at the office for 30 minutes after each session so that prompt treatment can be started when and if this does occur. ...Read more

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Are allergy shots really effective in improving symptoms and is the chance of having a bad side effect high? Thanks

Are allergy shots really effective in improving symptoms and is the chance of having a bad side effect high?

Thanks

No: Allergy shots modify the immune response (potentially even permanently for some)so that the body will stop recognizing allergens as enemies. (the new concept is that the body attacks allergens because the immune response has mistaken them as parasites). Symptoms improve when the allergic response is modulated. Do note that 20% of the people don't respond to allergy shots. ...Read more

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What are the long term effects from allergy shots?

What are the long term effects from allergy shots?

Yes: About 2/3 of people who do immunotherapy of an appropriate, effective dose will have long term relief from their allergy symptoms even after they have finished 3-5 years of the shots. In some cases this relief is permanent, in others symptoms will eventually return, but may be years later. ...Read more

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Do allergy shots hurt?

Do allergy shots hurt?

Not bad: My daughter got them when she was 2 years old - at first she cried but then we played a "who can be the most brave game" and all the tears were gone. ...Read more

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Will allergy shots work?

Will allergy shots work?

Yes: Allergen immunotherapy (allergy shots) is effective for most people and is the only "disease modifying" treatment available. In general about 30% of patients have great response, 30% have good response, 30% have a fair response and unfortunately 10% don't respond. There is no way to predict how good the response will be. It's excellent and safe therapy in the right hands (an allergist). ...Read more

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Do allergy shots really work?

Yes: Yes! as long as you are getting the appropriate and relevant allergens for your area of the country and achieve a high enough dose, shots are very effective at decreasing allergy symptoms and are a way of actually modifying asthma symptoms. ...Read more

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Can you actually be allergic to allergy shots?

Can you actually be allergic to allergy shots?

Not really: One wouldn't be allergic to allergy shots but because allergy shots contain the allergens one is allergic to one can have significant systemic reactions to allergy vaccine therapy. ...Read more

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Is thimerosal used in allergy shots?

Is thimerosal used in allergy shots?

Possibly: You would need to actually look at the package insert for the ingredients. Many multi-dose vials of injectables will contain thimerosal as a preservative to prevent contamination. Talk to your allergist who will know what they are using and be able to look at the ingredients. ...Read more

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Is allergy shots considered immunosuppressive?

Is allergy shots considered immunosuppressive?

Immune regulation: Allergy shots have been around for just over 100 years and have proven to be effective for most people who are allergic. They work through improved regulation of your immune system to reduce to allergic aspect. The most important thing is that many people continue to do well without the shots after having received them for 4-5 years. ...Read more

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