Skin sensitivity tests .. Types and results

During the skin allergy tests, the skin is exposed to allergic allergic substances (known as hybrids), and then undergoes it to discover the indicators of allergic reactions. In addition to using medical history, it is possible to confirm whether there is a certain substance that causes symptoms if you are touching, inhaling or eating. The reasons why the information obtained from allergic tests may benefit the doctor in the development of an allergic treatment plan which includes the avoidance of allergens, medication or allergic injection (immunotherapy). Skin allergy tests are widely used to diagnose allergies, including: Rinitis fever (allergic rhinitis) asthma -dermatitis (eczema) allergies of bees -gif Penicillin allergies are usually safe for adults and children of all ages, including babies, but it is not recommended to do skin tests in certain conditions. The doctor may recommend not testing the skin in the following cases: a previous allergic reaction. Perhaps a person is too sensitive to certain substances that the small amounts used in skin tests can lead to an imminent reaction (compliance or excessive sensitivity shock). Take medication that can affect the test results. This includes antihistamines, many antidepressants and a few stomachs. The doctor may decide that it is recommended that a person continue to take this medication instead of temporarily stopping it in preparation for the skin test. Infection with certain skin diseases. If eczema or psoriasis affects large parts of the skin on the arms and back, representing the usual tests, there may not be enough of the pure and uninfected skin for an effective test. Other skin conditions, such as the skin of the skin, can cause unreliable test results. The skin of the skin is a disturbance of the skin is a physiological reaction when rubbing the skin or itching, so that the skin is inflamed when pressure, scratching or rubbing, and sometimes the slave. Blood tests (immunosural cloolin tests in the laboratory) may be beneficial to those who should not do so or they cannot undergo skin tests. Blood tests are not used to detect penicillin allergies. Generally, skin allergy tests are reliable to diagnose allergies of portable substances in the air, such as pollen, pets and dust mission. The skin test can be helpful in diagnosing nutritional sensitivity, but since nutritional sensitivity may be complicated, the patient may require additional tests or procedures. Risk factors are the most common side effect of the skin test, is the appearance of slightly swollen, red and itchy (pimples). These pimples can be clearer during the test. However, swelling, redness and itching can occur after a few hours of testing in a skin area and remain that way for a few days. In rare cases, skin allergy tests can lead to a serious and immediate allergic reaction; Therefore, it is important to perform skin tests in a clinic with medicine and devices suitable for emergency situations. What can be expected is usually performed at the Doctor’s Clinic. The nurse usually takes the test while the doctor explains the results. It often takes about 20 to 40 minutes. Some tests reveal immediate allergic reactions that take place within minutes of the exposure to the historian (allergens). Other tests reveal allergic reactions, which appear in a few days. The tingle test of the skin The tingle test, also known as a scratch or scratch test, is also reached by immediate allergic reactions at 50 different substances at the same time. This test is usually taken to detect allergies for pollen, shape, pets, dust mission and food. The test is usually taken for adults in the forearm. The test can be done for children above the back. The skin allergy tests do not cause pain as this type of test is used by needles (tingling needles) that barely penetrate the skin surface, and that you do not bleed, but only a minor and happy discomfort. After cleaning the alcohol test, the nurse draws small marks on the skin and places a point from an extraction (allergic substance) next to each mark. Then use a needle to ting the skin surface to enter the extracts. And with each of the new tingling needles, a new tingling needle is used. To see if the skin responds naturally, the skin surface is scratched and two additional substances are placed: Histamine. This substance causes a skin response to most people. If your skin does not appear in response to histamine, the skin allergy test may not reveal the presence of allergies, even if you have it. Glycerine or saline solution. These materials cause no response in most people. If someone shows a reaction to glycerine or saline solution, his skin can be sensitive. The test results must be declared with caution to avoid a wrong diagnosis of allergies. After about a quarter of an hour since the tingling of the skin, the nurse confirms the presence of signs of allergic reactions or not. If he has an allergy to one of the materials tested, he will have a high (rumor) hump, feel red, itch and he may look like a mosquito bite. The nurse will then measure the size of the protrusion and absorb the results, and then it will clean the skin with alcohol to remove the signs. The skin injection test may need the patient a test in which a needle is used to spray a small amount of allergic extract into the skin in the arm (test within the dermis). The injection site is examined for about 15 minutes for the search for signs of an allergic reaction. The doctor may recommend this test to verify that there is an allergy to the poison of insects or penicillin. The patch test is generally to know if there is a certain substance that causes allergic dermatitis (seamless dermatitis). These tests can detect allergic reactions, which can take a few days. The needles are not used in the patch tests. Instead, the historians (allergens) are placed on the adhesive patch, which is then placed on the skin. During the test, the skin can be exposed to 20 to 30 extracts of substances that can cause contact dermatitis. Examples of these latex materials, medicines, perfume, preservatives, hair dyes, minerals and minerals. The adhesives are placed on the arm or back for 48 hours. During this period, the shower and activities that cause severe sweat should be avoided. The patch is removed when the patient returns to the doctor’s clinic. The irritated skin indicates the adhesive cloth to allergies. The results before leaving the doctor’s clinic will know the patient the results of the skin or the test in the blood. It can take several days or more learning tests to get the results. The positive result in the skin test indicates that the patient may have an allergy to a specific substance. More size pimples usually indicate a greater degree of allergies. Regarding the negative result in the skin test, it indicates that it probably does not have an allergy to a norm (an allergen). But it must be remembered that skin tests are not always accurate. Its results can sometimes indicate an allergy and is not present (false positive), or the test can provoke no reactions if the patient is exposed to a substance that has an allergy to it (fake negativity). This is because his reaction to the same test may differ according to the circumstances. Or his skin can show a positive response to one of the materials during a test, while not happening in daily life. The allergy treatment plan may include medication, immunotherapy, changes in the work or home environment or changes in the diet. Is it possible to ask the doctor about interpreting anything that is incomprehensible about diagnosis or treatment? Using the test results that determine the allergens and treatment plan that help control the condition, the patient can reduce or dispose of allergy indicators. This content of Mayo Clinic* Also read: