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A drug allergy is an allergy to a drug, most commonly a medication, and is a form of adverse drug reaction. Medical attention should be sought immediately if an allergic reaction is suspected. An allergic reaction will not occur on the first exposure to a substance.
Anaphylactoid reaction, non-immune anaphylaxis, or pseudoanaphylaxis, is a type of anaphylaxis that does not involve an allergic reaction but is due to direct mast cell degranulation. [ 10 ] [ 42 ] Non-immune anaphylaxis is the current term, as of 2018, used by the World Allergy Organization [ 42 ] with some recommending that the old ...
[1]: 123 The latter reaction is known as Texier's disease and lasts several years. [1]: 123 [16] Vitamin K reactions can occur on the skin but due to its varying presentation, healthcare providers have a difficult time diagnosing it. [17] After Vitamin K injection is administered there are two potential cutaneous effects that can occur.
In rare cases immunizations can cause serious adverse effects, such as gelatin measles-mumps-rubella vaccine (MMR) causing anaphylaxis, a severe allergic reaction. [13] Allegations particularly focus on disorders claimed to be caused by the MMR vaccine and thiomersal , a preservative used in vaccines routinely given to U.S. infants prior to 2001.
The version related to histamine is due to an allergic reaction to agents such as insect bites, foods, or medications. [1] The version related to bradykinin may occur due to an inherited problem known as C1 esterase inhibitor deficiency , medications known as angiotensin-converting enzyme inhibitors , or a lymphoproliferative disorder .
In medicine, desensitization is a method to reduce or eliminate an organism's negative reaction to a substance or stimulus. In pharmacology , drug desensitization refers to two related concepts. First, desensitization may be equivalent to drug tolerance and refers to subjects' reactions (positive or negative) to a drug reducing following its ...
Pseudoallergy, sometimes known as nonallergic hypersensitivity, is a type of hypersensitivity reaction mostly described in the context of drug allergy.The mechanism is somewhat similar to the type 1 hypersensitivity in the Gell and Coombs classification in that the effector cell is also mast cell.
Type I hypersensitivity (or immediate hypersensitivity), in the Gell and Coombs classification of allergic reactions, is an allergic reaction provoked by re-exposure to a specific type of antigen referred to as an allergen. [1] Type I is distinct from type II, type III and type IV hypersensitivities. The relevance of the Gell and Coombs ...