What Causes Allergies Definition

The definition of allergy. Normally the immune system stands guard and defends your body against intruders that can be dangerous to your health such as viruses and bacteria.

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Allergies are the result of the immune systems mistaken response to a harmless substance.

What causes allergies definition. Allergy is one of the major factors associated with the cause and persistence of asthma. When it does its job well your immune system keeps you from getting sick every time an ill-intentioned germ finds its way into your body. Chemical allergies are unique in the sense that they may be caused by natural or synthetic chemicals or by products.

As a result a number of chemicals are released. Food allergy is an immune system reaction that occurs soon after eating a certain food. These proteins may be from foods pollens house dust animal hair or moulds.

What really causes allergic reactions is your immune system. The word allergy means that the immune system has responded to. They are called allergens.

Allergy occurs when a person reacts to substances in the environment that are harmless to most people. Its not clear why this happens but most people affected have a family history of allergies or have closely related conditions such as asthma or eczema. Your immune systems job is to protect you from bacteria and viruses.

It may attack harmless substances -- like cat dander. Even a tiny amount of the allergy-causing food can trigger signs and symptoms such as digestive problems hives or swollen airways. A virus causes a cold while allergies are a reaction caused by an immune system response to certain substances in your surroundings.

An allergic reaction occurs when a persons immune system becomes hypersensitive to certain substances such as foods pollen medications or bee venom. What causes food allergies. They are called allergens.

In some people a food allergy can cause severe symptoms or even a life-threatening reaction known as anaphylaxis. Peanuts eggs or pollen for example can trigger reactions. Its these chemicals that cause the symptoms of an allergic reaction.

These substances are known as allergens and are found in dust mites pets pollen insects ticks moulds foods and some medications. Allergies occur when the bodys immune system reacts to a particular substance as though its harmful. While some people may be affected by occupational chemical exposure overtime others.

During a reaction your immune system releases antibodies. The number of people with allergies is increasing every year. Since the dawn of industrialization and mass production the incidence of chemical allergies and subsequent dermatitis has increased tenfold and so is the number of allergy specialists to treat it.

It mistakes innocent things in your surroundings for a serious threat and attacks them. Food allergies happen when the immune system the bodys defence against infection mistakenly treats proteins found in food as a threat. The symptoms you get are the result.

If you have allergies though part of your immune system works too hard. Allergy is an immune response Allergies are an overreaction of the bodys immune system to a protein. These are proteins that deliver a message to.

As the House Call Doctor explained allergy symptoms occur when our immune system mistakes a normal substance like pollen or a nut for an intruder and wages war against it. Some of the symptoms of environmental allergies include.

Allergies Child Health Issue Definition An Allergy Is An Overreaction Of The Immune System To A Substance That S Harmless To Most People Nemours Ppt Download