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Allergens and allergy Reactions – What You Need to Know

Leg of sleeping Small child with redness on the skin, suffering from food allergies,

An allergy can be defined as a condition between an allergic reaction to a normally harmless substance, called an allergenic substance. Allergens can consist of a wide range of food allergens, like milk, egg, wheat, peanut, tree pollen and grass seed, and environmental allergens like pollen from a bee hive, house fly, wind turbine or other airborne irritant.

The most common form of allergic reactions is the allergy-specific IgE, which can be measured by a blood test. However, other allergens are not immediately detectable by the blood test, for example rhinitis and atopic eczema.

The other type of allergic reactions is termed histamine-specific IgE. This particular type is measured by immunoglobulin M (IgM) in blood tests. There are many other allergy indicators, such as skin rashes, redness of the nose and throat, hives, itching sensations and other symptoms that can help determine the diagnosis of an allergic reaction.

The most common and well-known allergens cause allergic reactions. They are dust mites, cat dander, and animal dander. They are usually inhaled and cause immediate allergic reactions. Allergic reactions can also be caused by contact with a substance that has the same allergenic properties.

Allergens and allergy Reactions – What You Need to Know

Allergies are triggered by an allergy-related immune response that causes a series of immune-response events in the body. At this stage, the body can be said to be allergic, even if there are no signs of allergy-causing substances.

When the immune system of the body is unable to tolerate or fight off the substances that cause the allergic reactions, the body creates antibodies to prevent further exposure. This is repeated when the immune system detects that the immune system has been overwhelmed by an antigen. The body can therefore react again and create more antibodies to fight off the antigen and produce further immune-response events.

Allergy, however, can still occur if the body does not develop immunity against the allergens that cause allergic reactions. It is then called chronic or systemic allergy. A chronic form of allergy will have the body producing more antibodies against the substances than it is able to deal with.

Eczema is an inflammation of the skin and can also cause blistering and thickening of the skin. In some cases it can be accompanied by redness and/or cracking in the skin. This form of allergic response is different from what we usually experience when we are allergic.

If eczema is caused by skin irritants, a person who suffers from eczema could be allergic to skin irritants such as certain detergents and soaps. It could be triggered by environmental factors such as pet dander, chemicals, and dust mite droppings. It can also be caused by an allergen directly ingested into the skin.

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