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Alergia - Allergy

Def. 1 Se trata de una hipersensibilidad a una particular sustancia que, si se inhala, ingiere o se toca produce unos sntomas caractersticos.

Def.2 (english) An allergy is an abnormal reaction or increased sensitivity to certain substances. The allergic individual produces symptoms when exposed to these substances, which are harmless to non-allergic people.
The main reason for this is that allergic people make a special type of antibody called Immunoglobulin E (IgE), which can react with environmental substances in a harmful way. These substances are called allergens.
The reaction between allergens and IgE antibodies causes the release of substances such as histamine, which produce allergic symptoms in the skin, the nose, the eyes, the chest, etc.
The most common allergens are animal danders, pollens, house dust, house dust mites, molds, some drugs and many foodstuffs, especially fish, eggs, milk and nuts. Bee and wasp stings may cause allergic reactions, with fatal results in rare cases.
Additionally, feathers, wool, dyes, cosmetics and perfumes may act as allergens.An allergy is an abnormal reaction or increased sensitivity to certain substances. The allergic individual produces symptoms when exposed to these substances, which are harmless to non-allergic people.
The main reason for this is that allergic people make a special type of antibody called Immunoglobulin E (IgE), which can react with environmental substances in a harmful way. These substances are called allergens.
The reaction between allergens and IgE antibodies causes the release of substances such as histamine, which produce allergic symptoms in the skin, the nose, the eyes, the chest, etc.
The most common allergens are animal danders, pollens, house dust, house dust mites, molds, some drugs and many foodstuffs, especially fish, eggs, milk and nuts. Bee and wasp stings may cause allergic reactions, with fatal results in rare cases.
Additionally, feathers, wool, dyes, cosmetics and perfumes may act as allergens.


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