Doctor insights on:
Can you have anaphylactic rxn following first exposure to an allergen (eg medication) or is it usually after subsequent exposures?
Anaphylaxis..: On first exposure doesn't really happen, most of the time, as you need a sensitizing dose, i.e. Previous exposure, even in tiny amount, usually patients don't recall this previous exposure. Anaphylactoid reactions, can happen with certain drugs as morphine, x-ray dyes, and others, resembling exactly anaphylaxis without being an allergic reaction, and anaphylaxis can happen without a cause, rare. ...Read more
Allergy magic bullet: It's different for everyone. Most people respond well to antihistamines like zyrtec, Allegra & claritin, but some do not, & require intranasal steroid sprays. Even that is not enough for some, and medications like singulair (montelukast) or Accolate are used. Beyond that, allergy shots may help better in others. There is no single magic bullet. Check with your doctor, and figure out which is best for you. ...Read more
I ingested an allergen 5 days ago. I am still having a reaction and Benadryl (diphenhydramine) is the only drug working well. At 190 lbs how much can I take safely?
I had an adverse drug reaction once and they gave me antiallergy immediatelly. Is there any tests I should run to know wut s the allergen?
Adverse Drug Reactio: Your doctor should be able to tell you which medication caused the adverse reaction. You should not take that medication again. The adverse reaction could be worse the second time you take the drug. ...Read more
Many things: Anything that causes an allergic reaction, usually an ige mediated reaction. Spring pollen allergens are tree pollens and molds. Summer is mostly grass and mold. Fall is ragweed, other weeds, and mold. Year round allergens in the house are dust mites, pet danders, and, wait for it, mold. Common food allergens are peanut, shellfish, nuts, wheat, and others. ...Read more
Depends how: The route of exposure, among other factors (including genetics) determines whether an individual becomes allergic or tolerant of an allergen. Once allergic, for over 100 yrs, it has been known that bypassing respiratory mucous membranes by giving allergy shots leads to tolerance; similarly, new ways of food desensitization involve gradually eating the food in measured amounts. ...Read more
HEPA: Is a type of air filter. Meeting the hepa standard have many applications, including use in medical facilities, automobiles, aircraft, and homes. The filter must satisfy certain standards of efficiency such as those set by the United States department of energy. To qualify as hepa by us government standards, an air filter must remove 99.97% of all particles greater than 0.3 micrometre ...Read more
Triggers allergies: An allergen is any substance, usually a protein but occasionally a carbohydrate, drug or metal, that upon entering the body is perceived by the immune system as being foreign. If the immune reaction results in immediate hypersensitivity like asthma or anaphylaxis or contact dermatitis like poison ivy or poison oak then that foreign substance has acted like an allergen. ...Read more
Elimination diet: Try an elimination diet. You'll remove suspected allergens like wheat or dairy for a week, if symptoms improve, try reintroducing them one at a time in 2-3 day intervals. If you react negatively to a food, you may have a sensitivity to that food type. You can also see a provider for "rast" blood testing. ...Read more
Yes if allergic: The hallmark of allergy is an almost immediate reaction to substances to which you are allergic. If you are not allergic nothing happens. ...Read more
Genes ; environment: Whether you would become allergic or not is highly dependent on your genetic makeup and your exposure to the environment. In atopic dermatitis, one often finds gene mutations which lead to a permeable skin surface thereby allowing water to escape and allergens to enter through the skin and sensitize you the susceptibility of one's organ also determines what disease one may suffer. ...Read more
Are allergic tests for cats definitive? Will the test be done for all for major allergens known in cats?
Depends: There are two materials used for cat allergy testing - hair & skin. Both contain the major cat allergen. Cat skin contains other allergens - especially cat Albumin - not present in cat hair - that sometimes cause allergic symptoms. So if you were tested only with cat hair perhaps you could be retested with cat skin (aka cat epidermal or cat dander). ...Read more
I know when your body is in contact with an allergen it thinks that it is a harmful "alien" but why are there different reactions person to person?
Depends on: How the body processes the "alien" and the nature of the "alien" as well. There is likely a genetic component to how one responds to "alien". How one is exposed to these "aliens" affects the respons As an example, metal allergy usually causes skin rash with minor exceptions when airborne allergens usually cause nasal, respiratory, or intestinal symptoms among genetically susceptible individuals ...Read more
Immune response: In sensitization the immune system has recognized an allergen as foreign to the body & developed an elaborate mechanism to rid itself of the substance on re-exposure. Sensitization involves processing of allergen by dendritic cells that recruit t lymphocytes to instruct b lymphocytes to make a specific class of antibody, ige class, against the allergen. Ige binds to mast cells. You're sensitized. ...Read more
Yes: Allergens are most commonly a protein although other molecules can sometimes be recognized as an allergen. So, yes most foods are allergens. An allergic reaction is caused by your immune system recognizing those unique proteins and causing a reaction. Luckily it is fairly rare, so other foods don't cause a reaction and you can eat them. ...Read more
Your body: The degree of response your body mounts to the allergen determines the severity of the reaction. ...Read more
Depends: Nuts and peanuts are potent allergens but are nutritious. Rice snacks are not allergenic to most but have little nutrients. Since nearly any food can be an allergen, there is no totally allergen free snacks. As old greek saying stated " one man's meat another's poison". Read labels carefully is your best bet. In case of anaphylaxis, be sure to have 2 Epinephrine autoinjectors with you. ...Read more
Seasonal allergens: This is a question best answered by a board certified allergist. However, common allergens may depend on the season. Trees in early spring, grass in spring and summer, ragweed in fall, dust and molds are usually all year long, but most common in the winter when baseboard heating is used. If you are symptomatic and an antihistamine is not effective, see an allergist. ...Read more
Immunotherapy: The simple answer is allergy immunotherapy. This is typically done for airborne allergens or bees and is the process by which giving the patient back increasing doses of the allergen (s) they will have less and less symptoms. Allergy vaccine therapy is not a cure but can induce long term modifications in the immune system so that the targeted allergens clinically cause less problems. ...Read more
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