Find the source of allergy using allergy testing

There are numerous allergies that are caused due to various allergens and many of the symptoms overlap or are caused by many different substances. It is difficult to ascertain the causative agent without allergy testing as this would aid in singling out the exact allergen. Once the allergen has been identified, it can be completely avoided and would aid in living an allergy free life. Some of the symptoms that are exhibited by a patient who has allergy are also found in certain disease conditions that are caused by infectious agents. Therefore allergy testing is an important requirement that not only ensures that one suffers from some form of allergy and not an infection but also aid in ascertaining the type of allergen.

Allergies can give rise to life threatening conditions and should therefore be tested and treated appropriately. It is essential to undergo allergy testing as in many cases people are unaware about the exact cause of allergy. For example, when one gets the sneezes at home, the causative agent could be anything from dust mites to the room spray that is used. Finding the exact allergen using allergy testing will be useful in complete avoidance of the allergen.

Allergy testing begins with the health care provider providing a series of questions to collect information on one's social background, health status, and lifestyle, work environment and eating habits. The patient should remember not to take anti histamines before allergy testing as this could affect the results obtained. In case of any doubt, checking with one's medical practitioner about the drugs that can be consumed and those that should be avoided should be carried out before allergy testing. This will avoid false negative reactions that will falsely certify that one is not allergic to a particular allergen when one in reality actually is. Therefore antihistamines or allergy medications should be withheld before allergy testing.

The different types of allergy testing methods include skin tests, blood tests and elimination tests. Skin allergy tests include injecting a small amount of allergen into the skin and waiting for a reaction. The intradermal skin allergy testing method is used to identify if the injected substance induces an allergic reaction at the site of injection. Other forms of skin allergy tests include placing a small amount of the suspected allergy causing substance on the skin, preferably in the forearm, upper arm or back and waiting for a reaction that is generally seen within 20 minutes of application of the substance. A patch test is another what is allergy testing method where the suspected substance is taped onto the skin for a period of 24-48 hours. A positive result in a skin allergy test is evidenced by a swelling at the site of contact and the substance is thus regarded as the allergen. Blood tests involve testing the blood sample for the level of IgE and this test is generally employed when skin allergy testing method cannot be used.

Food allergy testing includes skin testing as well as blood testing but the most common type of food allergy testing is the elimination diet. In this form of allergy testing a particular type of food is completely eliminated from the diet. If the symptoms of food allergy subside on elimination of a particular food type and reappear on re-introduction of the food type into the diet, then that particular food type is ascertained to be the allergy causing food.

Under the care of a well trained medical practitioner challenge testing may be performed under strict conditions where the patient is exposed to the allergen in food or through inhalation. The appearance of symptoms will help in identifying the allergen.

Elimination and challenge methods of allergy testing require careful monitoring as severe forms of food allergy could be life threatening. So the best form of food allergy testing for severe cases would be to perform a blood test.

Dog allergy testing is another important testing method as a large number of people are allergic to their dear pets and don't know it. People who are allergic to dogs are generally allergic to the dog's hair, dander, urine or saliva. When allergic reactions occur at home it is imperative to check for dog allergy so as to ascertain whether one's pet is behind the allergy symptoms or dust mites present at home. Dog allergy testing may be carried out by wearing a shirt that has contains dog dander, if allergy symptoms break out then one is sure that one is allergic to dogs. Normally a double blind test should be carried out with 2 sets of shirts present. One shirt should be exposed to dog dander and the other shirt unexposed. This will help in identifying if a person is allergic to dogs.

The various allergy testing methods alone are not enough to determine the causative agent; one also has to discuss his/her complete medical history with the doctor. The doctor with his vast experience will be able to identify the allergen based on the allergy testing results as well as the background research of the patient. Once the allergen has been identified, controlling allergy will be a simpler solution.

The various allergy testing methods that are employed will therefore play a major part in ensuring that one leads a healthy life, free of discomfort due to allergy.

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