Zusammenfassung der Ressource
Hypersensitivity
- Any immune response against a foreign antigen that is exaggerated beyond the norm
- type I hypersensitivity or allergy
- immediate or anaphylactic
- localized or systemic
- two part mechanism
- sensitization upon initial exposure
- degradation of sensitized cells
- type II hypersensitivity
- known as cytotoxic
- cause by endogenous antigens or haptens
- 3 syndromes
- blood transfusion
- hemolytic disease
- drug - induced hypersensitivity
- type III hypersensitivity
- immune complex
- localised immune complex disease
- systematic immune complex disease
- type IV hypersensitivity
- known as cell - mediated
- occured in response to small chemical (hapten) encountered with skin (protein)