QuestionSBA
QuestionChoice
This is incorrect as Type II hypersensitivity reactions occur in hours-days. An example of Type II hypersensitivity reactions is autoimmune haemolytic anaemia. Type III reactions are mediated by IgG and IgM.
10002527
b
Type II reaction
QuestionChoice
This is incorrect as Type V hypersensitivity reactions occur when antibodies are produced to stimulate specific cell targets, for example Graves disease.
10002530
e
Type V
QuestionChoice
This is correct as Type I hypersensitivity reactions occur in asthma. This involves an immediate reaction (a matter of minutes) mediated by IgE.
10002526
a
Type I reaction
QuestionChoice
This is incorrect as Type IV hypersensitivty is delayed, typically occurring 24-72 hours after exposure. This type of reaction is also T-cell mediated. An example is contact dermatitis.
10002529
d
Type IV reaction
QuestionChoice
This is incorrect as Type III hypersensitivity reactions can occur over hours, days or even weeks. A common example of Type III hypersensitivity reaction is rheumatoid arthritis. This reaction is mediated by an antigen-antibody complex.
10002528
c
Type III reaction
Concept
Chapter
2693
3725
Asthma
Topic
132
Respiratory
13052
An 8-year-old girl was helping her mother clean out an old dusty garage. Soon she becomes breathless and has a feeling of tightness in her chest.

What type of hypersensitivity reaction has occurred?
a