Hypersensitivity Reactions

This topic provides an in-depth analysis of the four types of hypersensitivity reactions (Type I-IV), which represent inappropriate or excessive immune responses to antigens. It details the mechanisms, mediators, and clinical examples of each type, from IgE-mediated anaphylaxis (Type I) to T-cell-mediated delayed hypersensitivity (Type IV). For tertiary students in Zambia studying Immunology, Allergy, or Clinical Medicine, this topic is essential for understanding allergic diseases, transplant rejection, and many autoimmune conditions. The content is aligned with university-level syllabi and is critical for exams and practical clinical application. As allergic and hypersensitivity disorders are common in Zambia and globally, mastering this topic equips future healthcare professionals with the knowledge to diagnose, manage, and educate patients about these conditions, ultimately improving public health outcomes in the region.