<prompt> Skin test are used for which hypersensitivity reactions?IIIIIIIV  <response>: 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 panikers 9th edition, pg no: 163,164 p 