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2. Patch test - Wikipedia

   en.wikipedia.org/wiki/Patch_test

   A patch test relies on the principle of a type IV hypersensitivity reaction.. The first step in becoming allergic is sensitization. When skin is exposed to an allergen, the antigen-presenting cells (APCs) – also known as Langerhans cell or Dermal Dendritic Cell – phagocytize the substance, break it down to smaller components and present them on their surface bound major histocompatibility ...

3. Drug allergy - Wikipedia

   en.wikipedia.org/wiki/Drug_allergy

   Host risk factors include age, sex, atopy, specific genetic polymorphisms, and inherent predisposition to react to multiple unrelated drugs (multiple drug allergy syndrome). [3] A drug allergy is more likely to develop with large doses and extended exposure. [citation needed]

4. Allergy test - Wikipedia

   en.wikipedia.org/wiki/Allergy_test

   Allergy testing can help confirm or rule out allergies and consequently reduce adverse reactions and limit unnecessary avoidance and medications. [1] [2]Correct allergy diagnosis, counseling and avoidance advice based on valid allergy test results is of utmost importance and can help reduce the incidence of symptoms, and the need for medications and improve quality of life. [2]

5. Allergy - Wikipedia

   en.wikipedia.org/wiki/Allergy

   Adults and children of any age can get an allergy blood test. For babies and very young children, a single needle stick for allergy blood testing is often gentler than several skin pricks. An allergy blood test is available through most laboratories. A sample of the patient's blood is sent to a laboratory for analysis, and the results are sent ...

6. Allergen immunotherapy - Wikipedia

   en.wikipedia.org/wiki/Allergen_immunotherapy

   Allergen immunotherapy, also known as desensitization or hypo-sensitization, is a medical treatment for environmental allergies (such as insect bites) and asthma. [1] [2] Immunotherapy involves exposing people to larger and larger amounts of allergens in an attempt to change the immune system's response.

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9. Skin allergy test - Wikipedia

   en.wikipedia.org/wiki/Skin_allergy_test

   A person receiving a skin allergy test. A microscopic amount of an allergen is introduced to a patient's skin by various means: [1] Skin prick test: pricking the skin with a needle or pin containing a small amount of the allergen. [2] Skin scratch test: a deep dermic scratch is performed with help of the blunt bottom of a lancet. [3]