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Questions tagged [allergy]

Questions pertaining to a damaging immune response by the body to a substance, esp. pollen, fur, a particular food, or dust, to which it has become hypersensitive.

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20 views

Can a runny nose “Shoot Blanks”?

Every time i have a runny nose I'm comforting myself by thinking "It's ok, the body is getting rid of pathogens now" But is that really the case ? does every 'drop' of nasal mucus contain pathogens ?
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1answer
39 views

Are type 2 hypersensitivities autoimmune diseases?

I'm learning about hypersensitivities and it seems to me that all type 2 hypersensitivities are autoimmune diseases; also all examples of type 2 hypersensitivity I've heard so far are also classified ...
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1answer
37 views

Are non-allergic, non-pathogenic rhinitis associated with fever?

Among common causes of rhinitis are irritants weather changes infection (e.g. common cold) allergy (e.g. hay fever) One way to disentangle between infection and allergy in presence of rhinitis is by ...
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78 views

Why is the H2O molecule an antigen despite its tiny size and simplicity? [closed]

I just saw a news article about a woman with Aquagenic Urticaria which basically means she produces antibodies against H2O molecules which causes very bad symptoms if she touches or drinks water. We'...
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1answer
133 views

Why would someone have an anaphylactic reaction to intravenous saline?

https://www.sciencedirect.com/science/article/pii/S073567570800332X Abstract Anaphylaxis and acute allergic reactions may sometimes be fatal. They occur within minutes in a sensitized individual. ...
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145 views

Rising allergy and intolerance diagnosis rates

A leading theory behind the rising allergy and intolerance diagnosis rates is the "hygiene hypothesis." This theory suggests that living conditions in much of the world might be too clean and that ...
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2answers
169 views

Which conditions are associated with (multiple) food allergies?

Most people with food allergies are allergic to one or few foods, but allergies to more than three foods are relatively rare (PubMed, 2010). In some people who are allergic to several foods, an ...
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1answer
79 views

Is there solid evidence, that antibiotics cause allergies?

I have read, that the use of antibiotics could be part of the reason for the increase in allergies, we see today. In alternative medicine circles, it is a common theme to reduce the use of ...
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1answer
259 views

Is there such a thing as “histamine liberators” and how do they work?

In the context of allergies, I keep reading the term "histamine liberators" with claims that certain foods release histamine. A random example from everydayhealth.com: Some foods, while low in ...
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42 views

Is there a way to measure allergy to tablet/pill ingredients?

It looks like I have some kind of allergy to tablets/pills. It doesn't matter which type I take (I used to take mainly vitamins). If I take some, the result is vary from bearable sickness (for 2 days)...
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24 views

Does increasing “allergy” histamine affect “wake” histamine? Do both respond to the same triggers?

I understand that histamine is used by the body as part of the immune response, widening blood vessels, etc., to aid the white blood cells in their attack. Often this ends up helping them attack ...
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1answer
65 views

Is it possible to be allergic to corn but not popcorn?

Is it possible for a person to be allergic to one subspecies and not another of the same parent species? For instance, can a person be allergic to sweet corn but not popcorn (both subspecies of Zea ...
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1answer
161 views

How would I know whether I am lactose-intolerant? Are there any tests?

I suspect that I might be lactose-intolerant, but I don't know how to tell. Can I just see a doctor and get tested, or do I have to live with the assumption? If there are any standardized tests, how ...
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75 views

Cold allergy is it possible?

This may be a impossibility but here goes, is it possible to be allergic to cold temperatures? If it’s possible then it’s UBER rare granted, but still it might be possible non the less. If it helps I ...
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1answer
263 views

How long would someone be able to live if they suddenly became allergic to water?

Inspired by this tale - https://www.thefreelibrary.com/JUST+ONE+CUP+OF+WATER+COULD+KILL+LITTLE+HEIDI%3B+Girl%27s+deadly+allergy...-a061152595 Let's say someone is so allergic to H2O that a sip of ...
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1answer
71 views

What is an allergy?

Is an allergy a negative response to a molecule that the majority of the population doesn't have? I've heard that people can be allergic to lactose, which the majority of people aren't, while people ...
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1answer
37 views

How to deal with dehydrating medicine

If a person is dehydrated by something that cannot be gotten rid of, and drinking a lot of water solves some parts of dehydration but not others, due to losing the water by freqent urination, what ...
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2answers
99 views

Does early exposure protect against developing allergies later on in life?

I recently read a few papers (here and here) that concluded that children exposed to peanuts before 1 year of age were less likely to develop peanut allergies later in life than children who were not ...
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2answers
129 views

How low can you go on a low salt diet?

I'm sensitive to salt and am considering doing a salt-free diet. Is it ok if I remove salt and seasonings from my diet and cooking altogether? Will the sodium content of natural foods like oats, milk, ...
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1answer
153 views

Possible side effects of deer antler velvet

My doctor suggested I try deer antler velvet. But I am not sure about it. Does deer antler velvet have any side effects? Does it help growth? Are there any scientific studies about it?
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11 views

How credible is negative result of allergic skin tests?

Allergic tests performed a year ago confirmed I am not allergic to a cat. However, there a few signals that make me doubt in credibility of the test results: I felt much better (less sneezing, less ...
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0answers
14 views

Are allergies due to memory T cells for benign antigens?

If I understand correctly, the immune system reacts to infections by priming virgin helper T cells for the particular antigens exposed on the surface of the invader, leaving some memory T cells ...
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25 views

Truth or fiction: Testing vitamins to take by holding them and assessing strength

I'm a Ph.D. candidate in molecular biology and cannot convince my indoctrinated mother and grandmother that you cannot determine whether or not you need to take a vitamin by simply holding it and ...
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22 views

Factors affecting the severity of an allergic reaction

I share a house with two very furry guinea pigs and inconveniently, am also very allergic to them. Every morning I take an anti-allergy tablet as I’m well aware that I’m likely to come into contact ...
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65 views

Are “latex fruit intolerance/syndrome” and “histamine intolerance” related or otherwise two names for the same problem?

I have an intolerance to bananas and avocados without a doubt. I get bowel cramps, bloating, and if I eat way too much of those foods, some mild topical itching on my skin. My research for latex ...
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398 views

Is there a shampoo that does not contain SLS or cocamidopropyl betaine?

If there is someone who is allergic to cocamidopropyl betaine and concerned about skin irritation from SLS (Sodium Lauryl Sulfate), is there a resource that shows shampoos without these ingredients?
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1answer
43 views

How to discover allergies to certain foods?

Sometimes it is hard to find food allergies. Wheezing or any side affects but the root cause may not be known. Is there a good way to find food allergy?
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1answer
51 views

How long can an allergic reaction last after exposure to an allergen?

My dad has a skin allergy (rashes, itchiness), and I want to cut out some things from his diet to see if it's causing the problem. But I don't know how long an allergic reaction can last in absence ...
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1answer
19 views

What shots are not okay for someone with egg allergies?

I have heard that flu shots generally are manufactured in eggs or chicken embryos, and so there can be an issue for people who are allergic to eggs. What other shots should people allergic to eggs ...
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2answers
210 views

Should all the stuff be thrown away when moving out from a house with mold?

Can anything from a molded house be safely moved to a new house without any further harm for health? Can spores be wiped out from clothes and furniture?
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1answer
58 views

Food Packaging Labels' Ingredient Statement Required To List Allergens?

I discovered recently I am allergic to soy and have been looking at the labels on many foods I eat to discover it's in almost all the foods I eat. Some don't seem to make any sense - like raw walnuts ...
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0answers
32 views

how does the immune system identify allergens? application: varenicline and lobeline

I'm wondering if we know how the immune system identifies allergens. My biochemistry knowledge is basic so I apologize if I use concepts incorrectly! Specifically, I want to know about the likelihood ...
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1answer
469 views

Taking Benadryl after Claritin

I take Claritin in the mornings. Right now in the evening my eyes are itchy and I'd like to take Benadryl. Is this a good idea or not? Thanks!
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38 views

What causes asymptomatic itching with rarely distributed rash?

Preface: I am not a student of medicine or a medical professional by any means. All uses of anatomic and biologic terms come from a general education plus a little hobby-knowledge. Misuses of such ...
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0answers
25 views

Is immunotherapy effective against allergies?

I have been suffering from allergies for years and I have recently seen an allergist. I was told that I would be a good candidate for immunotherapy. However, it is not an inexpensive process and a ...
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0answers
49 views

Cleaning to rid house of cat allergen after cat is gone

We discovered through a blood test that our 3yo is severely allergic to cats. We have two cats who are 7 and 8 respectively and we're adopted as kittens. So their hair and dander is all over ...
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1answer
1k views

Long term effects of an allergy pill? Loratadine

Are there any studies/effects of long term use of an allergy pill? I use Loratadine to help control my environmental allergies but I'm concerned about it being an every-day thing. Am I facing any ...
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2answers
160 views

Should Neosporin never be used?

I read on https://millerfamilydermatology.com/things-that-are-forbidden-in-my-house/ (mirror): 1 Neosporin® Neosporin is a combination of 3 different topical antibiotics-Neomycin Sulfate, ...
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0answers
58 views

Allergic Reaction? Adderall + Welbutrin / Bupropion

Current Medications: Adderall 20mg IR, Welbutrin (Bupropion) 100mg IR twice /day. Symptoms: Over time I've developed an odd set of symptoms: --My face always tingles / i feel compelled to "pull" my ...
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1answer
55 views

Potato and rice diet to prevent allergic reactions to calm down atopic eczema

I've heard of a diet consisting only of boiled potatoes, rice (with salt) and cooked apples which shall help against skin problems possibly caused by allergies. The diet is supposed to be followed for ...
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1answer
822 views

Is it ok to use sterile eye drops every day

I have very allergic eyes that redden up very quickly even without rubbing. When it becomes too much I see the doctor and take some eye drops for a month. But the allergy keeps on coming back. A few ...
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0answers
49 views

Can HEPA air purifiers release allergens when particles inside the filter decompose / break apart?

The smallest of pollen grains (~0.6 microns) and other allergens should be trapped by a HEPA filter, however what happens when these decay / break apart? Is the allergen the whole pollen grain or are ...
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0answers
54 views

Air Cooler and Health Issues

I am new to air cooling appliances at home. Now, I am planing to buy a air cooler ( not conditioner), but I heard that it will create health issues such as dust allergy, cold etc. Because It ...
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1answer
191 views

Map of ragweed infested countries

I have a very serious ragweed allergy and I am living in Hungary which is pretty much super infested. I started wondering which countries are affected by this lovely plant, because I don't want to ...
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0answers
29 views

What is an appropriate Neti Pot solution, and how does one adjust it for best results?

Many people use neti pots for sinus irrigation. Using them can reportedly help with infections, allergies, headaches, congestion, and other sinus-related issues. Small packets of chemical mixtures ...
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1answer
6k views

My allergy-caused stuffy nose goes away when I exercise. Why?

I'm currently dealing with my seasonal pollen allergies, and currently the right side of my nose is simultaneously blocked and runny. But when I start exercising, for example five situps, the blockage ...
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0answers
39 views

Will food allergy rashes eventually stop appearing?

I've recently noticed that after eating certain food, I develop a minor allergic reaction in form of a small red rash or two, anywhere on my body. The allergic reaction is in my opinion very minor, ...
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0answers
102 views

Is it true that carbonic acid should be avoided when one is histamin intolerant?

I've read a few contradictionos things about carbonic acid. Some statements say its a histamin liberator (thus produces histamin), while others say the exact opposite. Now I would like to know if ...
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1answer
804 views

gas/upset stomach from red meat?

So this wasn't formerly a problem for me until quite recently. I've noticed that generally deli meat (roast beef or pastrami) is the typical culprit that does this to me. Symptoms include: foul ...
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2answers
196 views

Difference between common cold and flu?

What are the differences between flus and colds? I don't know about English, but in Spanish they confuse it very often when using words gripe and resfriado. Maybe it's not the case in English, but I ...