QuestionSBA
QuestionChoice
Type I hypersensitivity reactions, also known as immediate hypersensitivity reactions, are characterised by a rapid onset of symptoms due to the release of histamine and other inflammatory mediators from mast cells and basophils. Anaphylaxis is a classic example of a Type I hypersensitivity reaction, and it can lead to severe, systemic symptoms, including difficulty breathing and hives. Type I hypersensitivity reactions are IgE-mediated; other examples include asthma and bee stings.
10024075
a
Anaphylaxis
QuestionChoice
Rheumatoid arthritis is an autoimmune disease that involves immune-mediated inflammation of the joints (Type III hypersensitivity).
10024076
b
Rheumatoid arthritis
QuestionChoice
Contact dermatitis is a delayed-type hypersensitivity reaction (Type IV) involving a local skin response to allergens.
10024077
c
Contact dermatitis
QuestionChoice
The tuberculin skin test reaction is a Type IV hypersensitivity reaction, also known as delayed-type hypersensitivity, in response to exposure to the tuberculosis antigen.
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e
Tuberculin skin test reaction
QuestionChoice
Systemic lupus erythematosus is an autoimmune disease characterised by immune complex deposition (Type III hypersensitivity) and the production of autoantibodies (Type II hypersensitivity).
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d
Systemic lupus erythematosus
Concept
Chapter
2693
5730
Hypersensitivity Reactions
Topic
288
Allergies
17213
Which of the following is an example of a Type I hypersensitivity reaction?
a