Hypersensitivity reactions
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چکیده
Hypersensitivity refers to undesirable (damaging, discomfort producing and sometimes fatal) reactions produced by the normal immune system. Hypersensitivity reactions require a pre-sensitized (immune) state of the host. Hypersensitivity reactions can be divided into four types: type I, type II, type III and type IV, based on the mechanisms involved and time taken for the reaction. Frequently, a particular clinical condition (disease) may involve more than one type of reaction.
منابع مشابه
Evaluation of type I drug hypersensitivity reactions caused by chemotherapy in hospitalized children
Background and Objective: Type I drug hypersensitivity reactions causes immune responses that could endanger life. Therefore this study was designed with the aim of evaluation and register reactions that caused by chemotherapy in hospitalized children in Rasoul Akram Hospital in 2015. Methods: This is a descriptive, cross sectional study. All statistical calculation was performed using the v...
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Orthodontic treatment of individuals with metal hypersensitivity is a matter of concern for the orthodontist. Orthodontic appliances contain metals like Nickel, Cobalt and Chromium etc. Metals may cause allergic reactions and are known as allergens. Reaction to these metals is due to biodegradation of metals in the oral cavity. This may lead to the formation of corrosion products and their expo...
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Background: Administration of phenytoin can been associated with severe adverse reactions such as hypersensitivity reactions. Lymphocyte transformation test (LTT) can be a useful method for determination of the drug, which has caused hypersensitivity reaction. This study was done to evaluate the results of lymphocyte transformation test in patients with delayed hypersensitivity reactions foll...
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Usage of cancer chemotherapeutics drugs can be associated with adverse drug reactions. When IgE-mediated drug reactions are formed following administration of a chemotherapeutic drug that is a drug of choice, drug desensitization protocols can be helpful. Hypersensitivity reactions can be allergic or nonallergic, but the clinical manifestations are similar. Rapid drug desensitization (RDD) is e...
متن کاملRapid desensitization for hypersensitivity reactions to chemotherapeutic drugs; a case series
Usage of cancer chemotherapeutics drugs can be associated with adverse drug reactions. When IgE-mediated drug reactions are formed following administration of a chemotherapeutic drug that is a drug of choice, drug desensitization protocols can be helpful. Hypersensitivity reactions can be allergic or nonallergic, but the clinical manifestations are similar. Rapid drug desensitization (RDD) is e...
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