Examples of allergen in the following topics:
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- A substance that causes a reaction is called an allergen.
- Blood tests can be done to look for an allergen-specific IgE.
- A microscopic amount of an allergen (for example, tree pollen) is introduced to a patient's skin by means of either a prick test, which employs a needle or pin to break the skin's surface, or a patch test, where a patch containing the allergen is applied to the skin.
- Further testing can then be performed in order to identify the specific allergen.
- Immunotherapy employs the injection of allergens in order to gradually desensitize the body's response.
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- Symptoms can be prevented by avoiding triggers such as allergens and irritants and by inhaling corticosteroids.
- For example, increased exposure to indoor allergens in infancy and early childhood has been analyzed as a primary cause of the rise in asthma.
- Primary prevention studies aimed at the aggressive reduction of airborne allergens in a home with infants have shown mixed findings.
- Strict reduction of dust mite allergens, for example, reduces the risk of allergic sensitization to dust mites, and modestly reduces the risk of developing asthma up until the age of 8 years old.
- The most common triggers include allergens, smoke (tobacco and other), air pollution, non selective beta-blockers, and sulfite-containing foods.
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- The hygiene hypothesis refers to lack of exposure to pathogens early in life, thus resulting in susceptibility to allergens.
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- Immediate Hypersensitivity (Type I) is an immediate response to an allergen (a foreign substance that poses no danger in and of itself yet is treated as an antigen) that the immune system has had prior exposure to.
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- Coryza may not always have an infectious or allergenic etiology and can be due to something as innocuous as a cold wind, spicy food, or tender points in the muscles of the neck such as the sternocleidomastoid.
- Coryza from any allergic causes usually gets relieved if contact with the allergen (dust, pollen, cold wind, etc.) is avoided.
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- In the skin, they keep us somewhat watertight and help keep allergens
out of our body.
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- Anaphylactic shock is caused by a severe reaction to an allergen, leading to the release of histamine that causes widespread vasodilation and hypotension.
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- Bronchoconstriction is treated with anti-inflammatory drugs, such as corticosteroids, and prevented by maintaining lung health, such as through avoiding smoking, air pollution, and airborne allergens.
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- IgE: Found in circulation and binds to allergens, triggering histamine release from mast cells and basophils.