Sometimes you get rashes out of nowhere and you will wonder what particular thing that causes such skin allergy. Each of us has high skin sensitivity on particular things such as animal's hair from cats and dogs from your neighborhood.
All you can do is avoiding close contact with these pets or you can wear gloves and long sleeves clothing if you could not resist holding or patting them. In other words, you will be able to prevent your unpleasant rashes appearing on your skin if you are able to recognize the main causal of this particular skin disorder (also known as allergen).
Before that, you need to know about your IgE antibody in which participate in allergic reactions. This IgE antibody triggers the release of histamine from the surrounding tissues or white blood cells (specifically mast cells and basophills). Histamine is a chemical that induces rashes and hives if it unleashes at the skin area.
Basically, skin allergies occur when individuals are detected with high levels of IgE antibodies in their blood.
Detecting allergens can be done through a radioallergosorbent testing or RAST in which using blood serum. Blood serum has to be screened with several allergens and then followed by an extended panel of additional allergens. Therefore, the RAST test measure the increase levels of IgE antibodies in which is an alternative to skin testing particularly atopic dermatitis (eczema).
Basically, the cost of this particular skin test is based on number allergens used. For your information, the more allergens used during the test, it will provide higher chances of identifying the right possible allergens that trigger allergic reactions on the skin.
These measurements are used in persons with asthma, hay fever, and atopic dermatitis (eczema) and are an accurate and convenient alternative to skin testing. Although more expensive, they do not cause hypersensitivity reactions.
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