Immunological hypersensitivity

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Hypersensitivity reactions include both allergies, intolerances and certain autoimmune illnesses.

Hypersensitivities are classified into four main types, with a fifth type also recognized.[1][2]

Hypersensitivity types[edit | edit source]

  • Type I: Immediate reaction
  • Type II: Antibody-mediated reaction
  • Type III: Immune complex-mediated
  • Type IV: Cell-mediated or delayed-type reaction[1]
  • Type V: Antibody[2]

Hypersensitivity illnesses[edit | edit source]

Examples according to hypersensitivity type include:

See also[edit | edit source]

Learn more[edit | edit source]

References[edit | edit source]

  1. Momtazmanesh, Sara; Rezaei, Nima (January 1, 2020). Hypersensitivity. Elsevier. ISBN 978-0-12-801238-3.
  2. Shibani Basu; Bimal Krishna Banik (October 29, 2018). "Hypersensitivity: An Overview". Immunology: Current Research. 2 (1).

antibodies Antibody/immunoglobulin refers to any of a large number of specific proteins produced by B cells that act against an antigen in an immune response.

anaphylaxis "an often severe and sometimes fatal systemic reaction in a susceptible individual upon exposure to a specific antigen (such as wasp venom or penicillin) after previous sensitization". Typically causes breathing problems, fainting or loss of consciousness, fast heartbeat, itching, and hives. (Learn more:

The information provided at this site is not intended to diagnose or treat any illness.
From MEpedia, a crowd-sourced encyclopedia of ME and CFS science and history.