Related Experiment Video
Updated: Jul 23, 2025
07:22
Basophil Activation Test for Allergy Diagnosis
Published on: May 31, 2021
8.3K
An Exceptional Case of Recall Phenomenon to Hypersensitivity to Amoxicillin
Rosita M Castillo-Loja1, Francisco J Muñoz-Bellido1, Ignacio Dávila1
1From the Allergy Service, University Hospital of Salamanca, Salamanca, Spain.
Dermatitis : Contact, Atopic, Occupational, Drug
|July 12, 2023
Abstract
No abstract available in PubMed .
Related Concept Videos
01:30Hypersensitivities
766
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...
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...
766
02:06Allergic Reactions
27.8K
Overview
27.8K
01:27Allergic Drug Reactions
895
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...
895
01:20Desensitization and Tachyphylaxis
1.8K
Tachyphylaxis is described as a rapid decrease in response to a drug after repeated or continuous administration of the same drug dose. It is a phenomenon where the body becomes less responsive to a particular substance or intervention over time, requiring higher doses or stronger interventions to achieve the same effect. It results from adaptive changes in the body's receptors, signaling pathways, or physiological processes that occur in response to prolonged exposure to a stimulus.
1.8K
00:42Cross-reactivity
31.3K
Overview
31.3K
01:23Immunological Memory
680
Immunological memory, a pivotal pillar of the adaptive immune system, is responsible for the body's ability to remember and respond more swiftly and effectively to previously encountered pathogens. This remarkable feature is what makes vaccines so effective in preventing diseases.
What is Immunological Memory?
Immunological memory is an integral function of the immune system that allows it to recognize and react more rapidly and effectively to pathogens previously encountered. This feature...
What is Immunological Memory?
Immunological memory is an integral function of the immune system that allows it to recognize and react more rapidly and effectively to pathogens previously encountered. This feature...
680