What is the patch?
Patch test, also known as an allergic test, is a diagnostic examination performed to determine whether an individual is allergic to certain substances. The test that is carried out using different methods can cause some discomfort and result in skin irritation if the individual responds positively to the applied allergen. There are certain risks associated with a patch test and this should be discussed with a qualified healthcare professional before the test.
The allergic test is most commonly performed to determine which substances cause an allergic reaction in an individual. For those whose symptoms of asthma cannot be easily checked using a medicine, the patches test may be recommended. Individuals who regularly suffer from hay fever can also have an allergic test. Other conditions that may cause the use of a patch test may include allergies to food, hives and allergy to penicillin.
The three main match test method is used. Methods are used asIt is leather, elimination and blood tests and all include the introduction of allergen material to induce an allergic reaction. Another test known as the provocation or challenge test includes the introduction of an individual into a controlled environment where the suspicious allergen is used or inhaled. It is known that testing provocations causes serious allergic reactions and should only be performed by a qualified healthcare worker.
Skin tests are the most common method and may include piercing the skin and introducing a small amount of substance induction allergy. Generally administered on the arm or back is the sting test by the most common use of the skin test. The intradermal test involves injection of allergen material and is used in testing specific allergies such as penicillin. During the ATCH, the allergen is placed on the skin and covered with tape for 48 hours, then the area will be evaluated on the reaction. Skin tests can be usedY to diagnose various allergies, including mold, pollen and poison tests.
Elimination tests are used to diagnose food allergies and can be performed for a longer period of time. One process known as an elimination diet involves removing certain foods from the individual's diet for several weeks. Once the items are removed from the diet, they are slowly re -introduced to cause an allergic reaction. Another approach to the elimination test is called a double blind test and includes the administration of masked foods to test mild allergic reactions. Neither the individual nor the test manager are aware of which substance is harmless and which is a potential allergen; Only the third party is aware of the allergen, which is identified with TRESEME.
Blood tests include assessment of antibodies of immunoglobulin E (IgE) after allergens administration. Increased levels of these antibodies indicate an allergic reaction. To evaluate the activity of white blood cells and antibodies in the presence of an established allerDifferent types of blood tests are used, including the complete IgE level, the absolute number of eosinophils and serum electrophoresis.
Before any allergy test, an overview of an individual's history may be performed. Those who are undergoing a skin test are instructed to refrain from antihistamines, which can cause false negative reading. False reading can lead to a potentially dangerous situation if an individual is exposed to a substance for which she has tested a negative and causes a serious allergic reaction.
abnormal results, also known as positive results, for the repair test indicate that the individual is varied for administered allergens. The degree of reaction depends on the individual sensitivity on the substance. The risks associated with patches are serious allergic reactions and anaphylactic shock, a life -threatening allergic reaction that can lead to heart or respiratory.