Explore the intricacies of Type I Hypersensitivity Reaction (HSN-I) in this comprehensive 15-minute video lecture. Delve into the pathophysiology of asthma, atopy, and anaphylaxis, examining the roles of histamines, leukotrienes, and eosinophilic chemotactic factors. Learn about IgE, IL-5, and the differences between first and second exposures, as well as early and late responses. Discover the types of bronchial asthma, including extrinsic (allergic) and intrinsic asthma, and understand the effects of cold exposure, exercise, and aspirin on asthma. Gain valuable insights into the use of inhaled corticosteroids in asthma treatment.