A skin allergy test helps identify the substances that cause any kind of allergy symptoms. Skin allergy testing involves the application of an allergen to your skin, and then observing if there are signs of reaction on the skin. Doctors take into consideration your medical history as well as these skin allergy tests to figure out whether certain symptoms that you exhibit, such as sneezing, skin rashes, and wheezing, are due to some allergies that you may have. A skin allergy test can also help in the identification of the substances that could be the cause of your allergic reactions. With the results from these tests doctors can work out a plan to treat your allergies.
Skin allergy testing can be used in the diagnosis of a number of allergic conditions such as food allergies, bee sting allergy, penicillin allergy, hay fever and many more. Age is not a barrier as far as these tests are concerned and both adults and children can go in for these tests. Your doctor will however advise against skin tests if you are allergic to certain medications that might hamper your test results, if you have some skin disease that is severe, or if you are sensitive to certain allergens.
There are three types of skin tests for allergies. The intradermal test, the scratch test, and what is known as the patch test.
Both the scratch test and the intradermal test take about an hour, while the skin patch allergy test would take about 48 hours. This test takes long as the patch has to be worn long enough to determine if there is any kind of delayed reaction.