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  2. Skin allergy test - Wikipedia

    en.wikipedia.org/wiki/Skin_allergy_test

    The test is done to assess allergies to drugs like penicillin [5] or bee venom. Skin testing on back. To ensure that the skin is reacting in the way it is supposed to, all skin allergy tests are also performed with proven allergens like histamine, and non-allergens like glycerin. The majority of people do react to histamine and do not react to ...

  3. 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 ...

  4. Allergen - Wikipedia

    en.wikipedia.org/wiki/Allergen

    After performing the diagnosis, the doctor is able to tell the main cause of the allergic reaction and recommend the treatment to follow. 2 tests have to be done in order to determine the cause: a blood test and a skin test. Allergists do skin tests in one of two ways: either dropping some purified liquid of the allergen onto the skin and ...

  5. Allergy - Wikipedia

    en.wikipedia.org/wiki/Allergy

    Skin allergies frequently cause rashes, or swelling and inflammation within the skin, in what is known as a "weal and flare" reaction characteristic of hives and angioedema. [ 29 ] With insect stings, a large local reaction may occur in the form of an area of skin redness greater than 10 cm in size that can last one to two days. [ 30 ]

  6. Antigen - Wikipedia

    en.wikipedia.org/wiki/Antigen

    The antigen cannot elicit the immune response without the help of an immunologic adjuvant. [13] Similarly, the adjuvant component of vaccines plays an essential role in the activation of the innate immune system. [14] [15] An immunogen is an antigen substance (or adduct) that is able to trigger a humoral (innate) or cell-mediated immune ...

  7. Have a rash? Your iPad and other devices may be to blame - AOL

    www.aol.com/article/2014/07/14/have-a-rash-check...

    CHICAGO (AP) -- Unexplained rash? Check your iPad. It turns out the popular tablet computer may contain nickel, one of the most common allergy-inducing metals. Recent reports in medical journals ...

  8. Skin immunity - Wikipedia

    en.wikipedia.org/wiki/Skin_immunity

    Skin immunity is a property of skin that allows it to resist infections from pathogens. In addition to providing a passive physical barrier against infection, the skin also contains elements of the innate and adaptive immune systems which allows it to actively fight infections. Hence the skin provides defense in depth against infection.

  9. Parvovirus B19 - Wikipedia

    en.wikipedia.org/wiki/Parvovirus_B19

    Human parvovirus B19, generally referred to as B19 virus (B19V), parvovirus B19 [1] or sometimes erythrovirus B19, [2] is a known human virus in the family Parvoviridae, genus Erythroparvovirus; it measures only 23–26 nm in diameter. [3] Human parvovirus b19 is a below-species classification of Erythroparvovirus primate1. [4]

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