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Doctor insights on: How Long Do Allergies Usually Last

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How long does symptoms last from allergy pill?

How long does symptoms last from allergy pill?

Varies: If you are asking about side effects from allergy medicine (?Drowsiness), it can vary according to the medicine you took, the dose and how your body handles it. Since many allergy medicines are taken once a day, it could take a day or so for the effects to wear off. ...Read more

Dr. John Chiu
2,630 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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Why do allergy shot injections last for only about 10 years? Is there anything else that lasts longer?

Why do allergy shot injections last for only about 10 years?  Is there anything else that lasts longer?

We do not know: Some patients get lifelong relief from allergy shots, while others never seem to be able to stop them. Most patients get a least 10 years of relief from 3-5 years of shots. ...Read more

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How long does raw shrimp allergies last?

How long does raw shrimp allergies last?

Long, long time: Shrimp allergies tend to persist compared to other food allergies. Even when cooked, the major shrimp allergen is resistant to heat. Shrimp (and other shellfish) are more likely to cause severe allergic reactions like anaphylaxis. The major shrimp allergen called tropomyosin (in the meat/muscle) can cross react with house dust mite. The reaction has nothing to do with iodine. ...Read more

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How long do seasonal allergies last, help?

Seasonal allergy: As the terminology says, it would last until the season is over. I suppose what you refer to as seasonal allergy is seasonal allergic rhinoconjunctivitis or hay fever like diseases. You should check with your local allergist to see if it is the case and which seasons you are likely to be affected. ...Read more

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Food allergy symptoms, how long will it last?

Food allergy symptoms, how long will it last?

Less than a day: If the symptoms you are asking about are really due to food allergy, they should begin almost immediately after eating the food and resolve in several hours but may last a day. ...Read more

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How long does an alavert allergy usually last?

How long does an alavert allergy usually last?

Variable: It all depends. What were the allergic symptoms....Skin, breathing, GI tract, cardiac. Usually an allergic reaction can be between 2 hours to 7 days based on the reaction and many other factors. ...Read more

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How long will claratin last in the body to help with allergies?

How long will claratin last in the body to help with allergies?

24 hours or less: Claritin, and its generic form - Loratadine - generally lasts about 17 hours. Thus, taking it in the morning (which is safe to do as it is non-drowsy) should get you through the majority of the day. If it does not, talk to your doctor about adding a topical nasal steroid spray. ...Read more

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Received a depomedrol shot today 80mg, in my bottom, for allergies & sinus issues. When will it kick in and how long will it last?

Received a depomedrol shot today 80mg, in my bottom, for allergies & sinus issues. When will it kick in and how long will it last?

About 6 hrs: You should get some effects in about 6 hrs but the peak effect takes a day or two In general, I would advise against getting cortisone shots for a sinus infection especially for someone with anxiety & BP issues since nasal steroid likely works better with no serious side effects. If you have frequent sinusitis and allergies, best to consult an allergist. ...Read more

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How long does lobster allergy last?

How long does lobster allergy last?

Life long usually.: Most shellfish allergy is life long. Repeat testing and possible oral challenge may help determine if the allergy has resolved. ...Read more

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How long would a lobster allergy last?

Long time: Peanut, tree nut and shellfish allergies tend be very long lived allergies. ...Read more

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How long does an allergy attack to pollen normally last?

How long does an allergy attack to pollen normally last?

Days to weeks...: If you are continually exposed to pollen, an allergy attach could stretch over days to weeks (in fact, you could be sneezing or wheezing for the entire pollen season). ...Read more

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How long does seasonal allergies last? I still have an awful cough and i don't know what this means.

How long does seasonal allergies last? I still have an awful cough and i don't know what this means.

Depends: Where you live, how long the seasons are, what other allergens you may be allergic to (mold during winter) see an allergist for treatment. Good luck! ...Read more

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Going to allergist to be checked for enviremental allergies and to cats/dogs, what do they do? How long does it last? What should I bring

Going to allergist to be checked for enviremental allergies and to cats/dogs, what do they do? How long does it last? What should I bring

Usually skin testing: With skin testing the allergist usually pricks the skin with a small amount of the material you may be allergic to. A positive test is a hive. Sometimes the allergist will also test by injection a very small amount of the potential allergic material in the skin, .One must be off antihistamines for 3 days or more. Blood tests can be done if one can't do skin tests. Often, it takes 1-3 hours ...Read more

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I took an allergy pill and i think i am having a allergic reaction and i was wondering how long it will last. The reason why i think that is i got the?

I took an allergy pill and i think i am having a allergic reaction and i was wondering how long it will last. The reason why i think that is i got the?

Please re-submit: Hard to know if the reaction is to the allergy pill or something else and the remainder of the question is cut-off. Thanks for using HealthTap! ...Read more

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How long do food allergy rashes last?

How long do food allergy rashes last?

Could last a life: Time. It depends on the type of food allergy and treatment given. Some allergies may be controlled with medication and tolerance may be induced to others.
See this site for more info.
http://www.ncbi.nlm.nih.gov/pubmedhealth/pmh0001820/. ...Read more

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How long does pain from shellfish allergy last?

How long does pain from shellfish allergy last?

Hours: Not sure one would expect pain from a shellfish allergy reaction. In general, an allergic reaction from a food would last a couple of hours to maybe a day or so, if left untreated. If the reaction is treated them one should expect a quicker resloution. ...Read more

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How long could carpet/dust allergy reaction last?

How long could carpet/dust allergy reaction last?

One day to years: If the dust mite exposure is avoided, symptoms may resolve in a few hours without treatment. If there has been significant, prolonged exposure, it may take weeks or months to resolve without treatment. If the mold exposure cannot be avoided, the symptoms will last indefinitely. ...Read more

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How long does an food allergy rash reaction last for a baby?

How long does an food allergy rash reaction last for a baby?

Few days: Once the offending food is identified and removed from the diet, the rash should go away in a few days. Most likely this is not a true food allergy and is some sort of environmental irritant rash. ...Read more

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How long will a milk allergy last in a baby and will it go away?

How long will a milk allergy last in a baby and will it go away?

Unpredictable: Most infants outgrow milk protein allergy by the age of 2 years--more importantly, about 80% of children will outgrow allergy to milk by the age of 5. See an allergist for appropriate testing and recommendations on when to reintroduce milk into your child's diet. ...Read more

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How long does it last for a bee allergy to be clear? What are symptoms?

How long does it last for a bee allergy to be clear? What are symptoms?

Bee sting allergy: You can get an immidiate allergic responce and it can cause swelling of the larynx and you need Epinephrine injection, late resonce can be swelling, itching and rash at the site of sting and meds like Benadryl (diphenhydramine) and local treatment will be enough.If you have known allergy to bee sting, you should carry Epipen at all times.It may clear in 48 to 72 hours. ...Read more

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How long do eye allergies last ? And how to treat them

How long do eye allergies last ? And how to treat them

Can last days-wks: Allergies last depending on underlying cause. An skin allergy test can help understand what is cause and how long it will last. There are many treatment options: cold NP artificial tears, ant itch/histamine or mast cell stabilizer drops OTC and by RX. See Eyedoc2020.blogspot.com for full list. ...Read more

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How long eye allergies last if you're taking medication?

How long eye allergies last if you're taking medication?

Eye allergy: Some people will have eye allergies only for a particular season, such as spring or fall. Others will have allergies all year round. ...Read more

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How long does pineapple allergy rash last?

How long does pineapple allergy rash last?

Few hours: If the rash (usually hives) doesn't resolve within a few hours of staying away from pineapples, it probably has another cause. ...Read more

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How long can swelling from a mild peanut allergy last?

How long can swelling from a mild peanut allergy last?

It depends: Not to be vague in answering your question, but just because a patient has a "mild" allergy does not mean that a severe reaction cannot occur. Several things can affect a reaction. However, most swelling reactions resolve within 24 hours. If not, please see your doctor immediately. Also, if you have experienced tongue or throat swelling, see your doctor immediately as well. ...Read more

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Woke up this morning and one side of my face was swollen. I think it is allergy related but I'm not sure. How long will the swelling last?

Woke up this morning and one side of my face was swollen. I think it is allergy related but I'm not sure. How long will the swelling last?

See a doctor: This could be a number of things. Dental infection, parotid gland or salivary gland infection, among others. See a doctor for more evaluation. ...Read more

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I got an epipen (epinephrine) for a severe pineapple allergy. How long will it last, what would you recommend?

I got an epipen (epinephrine) for a severe pineapple allergy. How long will it last, what would you recommend?

Epi: They usually last a year but need to check expiration date on device itself. Keep out of extreme temperatures ( do not leave in hot car, freezer, etc) ...Read more

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My 2 yo woke up w/a prod cough. Is it possible it's allergies or can I expect it to get worse w/fever?We are going on vacation, how long will it last?

My 2 yo woke up w/a prod cough. Is it possible it's allergies or can I expect it to get worse w/fever?We are going on vacation, how long will it last?

Yes,unknown,unknown: Many parents face this issue as you prepare to leave home and your support system for care. A 2 yo is expected to get 5-7 respiratory infections per year and occasionally react to irritant exposures/allergic triggers. At the beginning, the eventual outcome of early coughing is unpredictable.Plan ahead and have the phone contact info for your pcp on hand. Phone management or advice can help. ...Read more

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How long do the symptoms of a dust mite allergy usually last for?

How long do the symptoms of a dust mite allergy usually last for?

Hard to say: Acute symptoms due to a specific exposure can last for one to two hours; less if treated immediately with antihistamines. But dust mite allergen is very common in the environment, so continued exposure throughout the night and day can cause continuous symptoms. If taking an antihistamine on a regular basis doesn't help, see your primary physician or allergist. ...Read more