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Related Concept Videos

Allergic Reactions: Anaphylaxis01:30

Allergic Reactions: Anaphylaxis

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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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Upper respiratory tract disorders, including viral infections and allergic rhinitis, cause significant discomfort and disrupt daily life. Managing these conditions involves a variety of drugs, such as antihistamines, intranasal steroids, decongestants, antitussives, expectorants, and mucolytics. Specific examples of drugs in each category are provided.
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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...
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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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Related Experiment Video

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Author Spotlight: Advancing Allergic Rhinitis Research with Multicolor Immunofluorescence
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Allergic Rhinitis.

Hasan A Kakli1, Timothy D Riley1

  • 1Penn State Milton S. Hershey Medical Center, Department of Family & Community Medicine, 500 University Drive, Hershey, PA 17033, USA.

Primary Care
|August 23, 2016
PubMed
Summary
This summary is machine-generated.

Allergic rhinitis is a common atopic disorder causing significant health and productivity loss. Diagnosis involves ruling out other causes and confirming with skin or serum tests to guide tailored, multimodal therapy.

Keywords:
Allergen immunotherapyAllergic rhinitisChronic rhinosinusitisNasal polypsSerum-specific Ig ESkin prick testingType 1 hypersensitivityVasomotor rhinitis

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Area of Science:

  • Allergy and Immunology
  • Otolaryngology

Background:

  • Allergic rhinitis is the most common atopic disorder.
  • It leads to substantial patient morbidity and reduced productivity.
  • Key symptoms include nasal congestion, rhinorrhea, sneezing, and itching.

Purpose of the Study:

  • To outline the diagnostic and therapeutic approach for allergic rhinitis.
  • To emphasize the importance of thorough patient evaluation.
  • To highlight the role of diagnostic testing in guiding treatment.

Main Methods:

  • Comprehensive patient history and physical examination.
  • Attention to red flag or atypical symptoms to exclude other conditions.
  • Diagnostic confirmation via skin testing or serum sampling.

Main Results:

  • Diagnosis can be confirmed using objective testing.
  • Testing results aid in tailoring patient-specific therapy.
  • Multimodal treatment strategies are employed.

Conclusions:

  • Allergic rhinitis requires careful diagnosis to differentiate from other conditions.
  • Diagnostic testing is crucial for effective, individualized treatment planning.
  • Therapy should be multimodal and adjusted based on symptom severity and quality of life.