QuestionSBA
QuestionChoice
Anaphylaxis is an example of type I hypersensitivity mediated by IgE and mast cells. Other examples include asthma and hayfever.
10008102
c
Anaphylaxis
QuestionChoice
Autoimmune haemolytic anaemia is an example of a type II hypersensitivity reaction mediated by IgG or IgM bound to antigens of cell surface. Other examples include Immune thrombocytopaenia (ITP) and haemolytic transfusion reactions.
10008104
e
Autoimmune haemolytic anaemia
QuestionChoice
Allergic contact dermatitis is an example of a type IV hypersensitivity reaction. Type IV hypersensitivity is also called ‘delayed hypersensitivity’, and it is mediated by T cells. Examples include granulomatous sensitivity (caused by tuberculosis/tuberculin protein), allergic contact dermatitis, and graft versus host disease (GVHD).
10008100
a
Allergic contact dermatitis
QuestionChoice
Rheumatoid arthritis is an example of a type III hypersensitivity reaction mediated by immune complexes between IgG/IgA/IgM and free antigens. Other examples include transfusion reactions, systemic lupus erythematosus and post-streptococcal glomerulonephritis.
10008103
d
Rheumatoid arthritis
QuestionChoice
Eczema is an example of type I hypersensitivity mediated by IgE and mast cells. Other examples include asthma and hayfever.
10008101
b
Eczema
Concept
Chapter
2693
4091
Hypersensitivity reactions
Topic
158
Immunology
14167
A 45-year-old man attends an allergy clinic with concerns that he is allergic to the protective equipment he is required to wear at work. The doctor explains to him that there are different types of hypersensitivity reactions that could account for his symptoms.

Which of the following is an example of a type IV hypersensitivity reaction?
a