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Related Concept Videos

Allergic Reactions: Anaphylaxis01:30

Allergic Reactions: Anaphylaxis

280
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,...
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Allergic Reactions02:06

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Overview
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Hypersensitivities01:30

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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...
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Drug Toxicity: Allergic Reactions01:30

Drug Toxicity: Allergic Reactions

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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...
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Asthma-IV: Diagnostic and Management01:30

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The diagnosis and management of asthma are comprehensive, encompassing clinical assessments, lung function tests, and pharmacological interventions. Here's an overview:
Clinical Assessment for Asthma:
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Asthma-I: Introduction01:29

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Asthma is a chronic respiratory ailment that requires careful management due to its varying symptoms and influencing factors. It is characterized by airway inflammation, bronchial hyperresponsiveness, and reversible airflow obstruction, leading to symptoms like wheezing, shortness of breath, chest tightness, and coughing. The symptom frequency and intensity may vary considerably over time. It is also linked to immune system responses to allergens and irritants, highlighting the complex...
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Related Experiment Video

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Measuring Local Anaphylaxis in Mice
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Anaphylaxis: underdiagnosed, underreported, and undertreated.

David A Sclar1, Phillip L Lieberman2

  • 1Midwestern University, Glendale, Ariz.

The American Journal of Medicine
|January 4, 2014
PubMed
Summary

Anaphylaxis remains underrecognized and undertreated in the US, despite improved diagnostic criteria. Many patients with severe allergic reactions do not receive essential follow-up care or prescriptions for epinephrine autoinjectors.

Keywords:
AllergyAnaphylaxisDrug utilizationEpidemiologyEpinephrineHealth care costsPhysician practice patterns

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Area of Science:

  • Allergy and Immunology
  • Emergency Medicine
  • Public Health

Background:

  • Anaphylaxis recognition and management have historically faced challenges, leading to underdiagnosis in emergency departments.
  • Epinephrine, the primary treatment, was historically underutilized, particularly when anaphylaxis was not promptly identified.

Discussion:

  • Despite advancements, anaphylaxis continues to be underrecognized and undertreated across the United States.
  • A significant concern is that most emergency department patients experiencing acute allergic reactions do not receive epinephrine autoinjector prescriptions or crucial allergen avoidance education.

Key Insights:

  • Improved diagnostic criteria and awareness are essential for accurate anaphylaxis identification.
  • Timely administration of epinephrine and appropriate patient education are critical for effective anaphylaxis management.
  • Systemic improvements in anaphylaxis care can significantly alleviate its burden on the healthcare system.

Outlook:

  • Disseminating updated information to healthcare professionals, especially primary care providers, is crucial.
  • Enhanced training on recognizing and managing anaphylaxis can improve patient outcomes.
  • Further research and implementation strategies are needed to ensure consistent and optimal anaphylaxis care nationwide.