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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),...
Cross-reactivity00:42

Cross-reactivity

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

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[Conjunctival provocation test with standardised allergens extracts].

Aleksandra Górska1, Marta Chełmińska

  • 1Klinika Alergologii Akademii Medycznej w Gdansku, Kierownik, Poland.

Pneumonologia I Alergologia Polska
|October 30, 2007
PubMed
Summary

The conjunctival provocation test (CPT) evaluates eye allergies by applying allergens to the eye surface. This review details CPT methods, diagnostic criteria, and the role of tear mediators in allergic eye disease.

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Area of Science:

  • Ophthalmology
  • Allergology
  • Immunology

Context:

  • Allergic eye diseases are common, impacting ocular surface health.
  • Accurate diagnosis is crucial for effective management of ocular allergies.
  • The conjunctival provocation test (CPT) is a key diagnostic tool.

Purpose:

  • To provide a comprehensive review of the conjunctival provocation test (CPT).
  • To outline indications, technical aspects, and eligibility criteria for CPT.
  • To discuss the role of tear inflammatory mediators in ocular allergic responses.

Summary:

  • The CPT involves topical allergen application to assess ocular allergic reactions.
  • This review covers test indications, methodology, inclusion/exclusion criteria, and interpretation.
  • It integrates findings on tear mediators and advancements in DNA technology.

Impact:

  • Enhances understanding of CPT for diagnosing allergic eye conditions.
  • Provides a foundation for standardized CPT protocols.
  • Highlights the link between molecular mechanisms and clinical presentation of ocular allergies.