https://pharmatlas.org/ 2026-04-06T11:08:11+00:00 https://pharmatlas.org/ https://pharmatlas.org/lib/exe/fetch.php?media=logo.png text/html 2026-02-12T19:37:31+00:00 Anonymous (anonymous@undisclosed.example.com) https://pharmatlas.org/doku.php?id=allergy:immunology:hypersensitivity_types&rev=1770925051&do=diff Hypersensitivity Reactions (Types I–IV) Hypersensitivity reactions are exaggerated or misdirected immune responses that result in tissue injury. Classified by mechanism: * Type I – IgE-mediated (Immediate) * Type II – Antibody-mediated cytotoxic text/html 2026-02-12T19:36:07+00:00 Anonymous (anonymous@undisclosed.example.com) https://pharmatlas.org/doku.php?id=allergy:immunology:type_i_hypersensitivity&rev=1770924967&do=diff Type I Hypersensitivity (IgE-Mediated) Type I hypersensitivity is an immediate, IgE-mediated immune reaction that occurs upon re-exposure to a sensitizing allergen. Examples: * Allergic rhinitis * Urticaria * Atopic asthma * Anaphylaxis ----------