Hypersensitivity reactions which occur within minutes of exposure to challenging antigen due to the release of histamine which follows the antigen-antibody reaction and causes smooth muscle contraction and increased vascular permeability.
Also Known As:
Hypersensitivity, Immediate; Atopic Hypersensitivities; Hypersensitivities, Atopic; Hypersensitivities, IgE-Mediated; Hypersensitivities, Immediate; Hypersensitivities, Type I; Hypersensitivity, IgE-Mediated; IgE Mediated Hypersensitivity; IgE-Mediated Hypersensitivities; Immediate Hypersensitivities; Type I Hypersensitivities; Atopic Hypersensitivity; Hypersensitivity, Atopic; Hypersensitivity, Type I; IgE-Mediated Hypersensitivity; Type I Hypersensitivity