This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Immunology, Subject name: Microbiology
[{'content': 'Skin test are used for which hypersensitivity reactions? \nSelect and explain. \nA. I, B. II, C. III, D. IV', 'role': 'user'}, {'content': "Answer: A \nExplanation: Type I hypersensitivity reaction is IgE dependent. When a small shocking dose of an antigen is administered intradermally to a sensitised host, there will be a local wheal and flare response. This is cutaneous anaphylaxis. Cutaneous anaphylaxis ( skin test for typ I hypersensitivity ), is useful in testing for hypersensitivity and in identifying the allergen responsible in atopic diseases. Reference : Anathanarayan & paniker's 9th edition, pg no: 163,164 <\\p>", 'role': 'assistant'}]