Quick Answer: What Is The Immune Phenomenon Associated With The Arthus Reaction?

What is an example of delayed hypersensitivity?

Examples of DTH reactions are contact dermatitis (eg, poison ivy rash), tuberculin skin test reactions, granulomatous inflammation (eg, sarcoidosis, Crohn disease), allograft rejection, graft versus host disease, and autoimmune hypersensitivity reactions..

What kind of hypersensitivity is asthma?

Type I hypersensitivity reactions are immediate allergic reactions (e.g., food and pollen allergies, asthma, anaphylaxis).

What is a hypersensitivity reaction?

Hypersensitivity. Specialty. Immunology. Hypersensitivity (also called hypersensitivity reaction or intolerance) refers to undesirable reactions produced by the normal immune system, including allergies and autoimmunity.

What is serum sickness syndrome?

Serum sickness is an immune-complex-mediated hypersensitivity reaction that classically presents with fever, rash, polyarthritis or polyarthralgias. It was first recognized as an entity in the early 1900s in patients who had received heterologous antisera, which was historically used to treat infectious diseases.

What is an Arthus reaction?

Medical Definition of Arthus reaction : a hypersensitivity reaction that occurs several hours to days following the intradermal injection of a vaccine into an animal and is marked by the formation of antigen-antibody complexes accompanied by localized inflammation, pain, redness, and sometimes tissue destruction.

What is a Type 3 hypersensitivity reaction?

In type III hypersensitivity reaction, an abnormal immune response is mediated by the formation of antigen-antibody aggregates called “immune complexes.” They can precipitate in various tissues such as skin, joints, vessels, or glomeruli, and trigger the classical complement pathway.

What are the 4 types of hypersensitivity?

Type I: Immediate Hypersensitivity (Anaphylactic Reaction)Type II: Cytotoxic Reaction (Antibody-dependent)Type III: Immune Complex Reaction.Type IV: Cell-Mediated (Delayed Hypersensitivity)

What is a Type 2 hypersensitivity reaction?

Type II hypersensitivity is an antibody-dependent process in which specific antibodies bind to antigens, resulting in tissue damage or destruction.

What is the Arthus reaction quizlet?

Arthus reaction. a type III hypersensitivity reaction that occurs when an animal has a large amount of circulating antibody and is exposed to the anitgen intradermally, resulting in localized deposition of immune complexes. Atopy.

What causes Arthus reaction?

Arthus reactions (type III hypersensitivity reactions) are rarely reported after vaccination and can occur after tetanus toxoid–containing or diphtheria toxoid–containing vaccines. An Arthus reaction is a local vasculitis associated with deposition of immune complexes and activation of complement.