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Related Concept Videos

Allergic Reactions02:06

Allergic Reactions

Overview
Allergic Drug Reactions01:27

Allergic Drug Reactions

Allergic reactions related to drugs are hypersensitivity responses driven by the immune system and bear no connection to the drug's therapeutic action. While drugs in isolation do not trigger an immune response, they can interact with endogenous proteins to form antigens. These antigens stimulate lymphocytes to produce antibodies. IgE-type antibodies attach themselves to mast cells. Upon subsequent exposure to the same stimulus, the antigen-antibody interaction is initiated, unleashing numerous...
Allergic Reactions: Anaphylaxis01:30

Allergic Reactions: Anaphylaxis

Anaphylaxis is a severe, life-threatening hypersensitivity reaction mediated by Immunoglobulin E (IgE) antibodies. When IgE binds to allergens, it triggers the release of mediators– histamine, leukotrienes, and prostaglandins from mast cells and basophils. These mediators cause vasodilation, edema, and inflammation, leading to various symptoms.The primary allergens causing anaphylaxis include food items (e.g., peanuts, shellfish), drugs (e.g., penicillin, asparaginase, corticotropin, heparin),...
Drug Toxicity: Allergic Reactions01:30

Drug Toxicity: Allergic Reactions

Drug-related allergies are immune-mediated responses triggered by the administration of pharmacological agents. These hypersensitivity reactions are classified based on the immune mechanisms involved. The four primary types—Type I, II, III, and IV—are mediated by different immunological pathways and exhibit distinct clinical manifestations.Type I Hypersensitivity/ IgE-Mediated Reactions: Immunoglobulin E (IgE) immediately mediates Type I hypersensitivity reactions. Upon initial exposure to a...
Hypersensitivities01:30

Hypersensitivities

Hypersensitivity, also known as a hypersensitivity reaction or allergic reaction, is a condition where the body's immune system reacts abnormally to a foreign substance. Such substances, that cause hypersensitivity are referred to as an allergen, could be something typically harmless to most people, like pollen or certain foods.
Types of Hypersensitivities
Hypersensitivity reactions are categorized into four types: Type 1, Type 2, Type 3, and Type 4. Each type has a distinct mechanism...
Cross-reactivity00:42

Cross-reactivity

Overview

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Related Experiment Video

Updated: Jun 11, 2026

Symptom Assessment of Patients with Allergic Rhinitis Using an Allergen Exposure Chamber
08:47

Symptom Assessment of Patients with Allergic Rhinitis Using an Allergen Exposure Chamber

Published on: March 3, 2023

Component resolved testing for allergic sensitization.

Kirsten Skamstrup Hansen1, Lars K Poulsen

  • 1Department of Pediatrics, The Juliane Marie Centre, Copenhagen University Hospital, Gentofte, Hellerup, Denmark. ksh@dadlnet.dk

Current Allergy and Asthma Reports
|July 15, 2010
PubMed
Summary
This summary is machine-generated.

Component resolved diagnostics offers new ways to diagnose allergies and personalize treatment. However, careful evaluation is needed to avoid misinterpretation and overdiagnosis of complex test results.

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Related Experiment Videos

Last Updated: Jun 11, 2026

Symptom Assessment of Patients with Allergic Rhinitis Using an Allergen Exposure Chamber
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Symptom Assessment of Patients with Allergic Rhinitis Using an Allergen Exposure Chamber

Published on: March 3, 2023

A Component-resolved Diagnostic Approach for a Study on Grass Pollen Allergens in Chinese Southerners with Allergic Rhinitis and/or Asthma
06:34

A Component-resolved Diagnostic Approach for a Study on Grass Pollen Allergens in Chinese Southerners with Allergic Rhinitis and/or Asthma

Published on: June 4, 2017

Basophil Activation Test for Allergy Diagnosis
07:22

Basophil Activation Test for Allergy Diagnosis

Published on: May 31, 2021

Area of Science:

  • Allergy diagnostics
  • Immunology
  • Personalized medicine

Background:

  • Component resolved diagnostics (CRD) presents novel opportunities for diagnosing allergic diseases.
  • CRD allows for individualized, allergen-specific treatment strategies.
  • Refinement of IgE-based testing may clarify the link between sensitization and allergic disease.

Purpose of the Study:

  • To explore the potential of CRD in allergy diagnosis and treatment.
  • To address the need for tools predicting severe outcomes and guiding allergen-specific therapies.
  • To highlight the promise of CRD due to minimal blood sample requirements for extensive allergen testing.

Main Methods:

  • Utilizing component resolved diagnostics for IgE-based testing.
  • Analyzing a multitude of allergens and allergenic components.
  • Requires large-scale studies with well-characterized patient cohorts and controls.

Main Results:

  • CRD offers promising advancements in allergy diagnosis and personalized treatment planning.
  • A small blood sample can be tested against numerous allergens and components.
  • Potential for improved correlation between allergenic sensitization and allergic disease.

Conclusions:

  • CRD holds significant promise for advancing allergy diagnosis and treatment.
  • The risk of overdiagnosis and misinterpretation of complex results must be managed.
  • Further large-scale studies are essential to evaluate the practical application and selection of allergenic components across diverse populations.