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Related Concept Videos

Allergic Reactions02:06

Allergic Reactions

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Allergic Drug Reactions01:27

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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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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.
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Related Experiment Video

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Symptom Assessment of Patients with Allergic Rhinitis Using an Allergen Exposure Chamber
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Patch Testing in an Allergy Clinic: Real-world Experience.

Shira Rosenberg-Bezalel1, Daniel Elbirt1, Keren Mahlab-Guri1

  • 1Department of Clinical Immunology Allergy and AIDS, Kaplan Medical Center, Rehovot, Israel.

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|October 30, 2022
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Summary

Patch testing is crucial for diagnosing allergic contact dermatitis, with nickel being the most common allergen. This study highlights key clinical features and prevalent allergens in real-world data.

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Area of Science:

  • Dermatology
  • Allergology
  • Immunology

Background:

  • Contact dermatitis presents as an itchy, red rash, categorized as irritant or allergic.
  • Allergic contact dermatitis diagnosis relies on patch testing and patient history.

Purpose of the Study:

  • To analyze 2-year patch test results, clinical data, and local allergen prevalence.
  • To compare common allergens found locally versus globally.

Main Methods:

  • Retrospective analysis of 517 participants (384 female, 133 male) undergoing patch testing.
  • Collection of clinical and demographic data with statistical analysis.

Main Results:

  • 261 patients (50.5%) tested positive for at least one allergen.
  • Nickel was the most frequent allergen; hands, head, and neck were most affected.
  • Higher sensitization rates observed in females and those with atopic dermatitis.

Conclusions:

  • Patch testing with thorough history is vital for relevant dermatological findings.
  • Clinicians need awareness of emerging allergens and exposure patterns.