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Immunodeficiency, also known as immunocompromisation, is a state in which the immune system's ability to fight infectious diseases and cancer is compromised or entirely absent. Most cases are acquired ("secondary") due to extrinsic factors that affect the patient's immune system.
An immune disorder is a dysfunction of the immune system. [1] These disorders can be characterized in several different ways: By the component(s) of the immune system affected; By whether the immune system is overactive or underactive; By whether the condition is congenital or acquired
In certain conditions, the regulation rather than the intrinsic activity of parts of the immune system is the predominant problem. [7] Immunodeficiency with hypopigmentation or albinism: Chédiak–Higashi syndrome, Griscelli syndrome type 2; Familial hemophagocytic lymphohistiocytosis: perforin deficiency, UNC13D deficiency, syntaxin 11 deficiency
Primary immunodeficiencies are disorders in which part of the body's immune system is missing or does not function normally. [1] To be considered a primary immunodeficiency (PID), the immune deficiency must be inborn, not caused by secondary factors such as other disease, drug treatment, or environmental exposure to toxins.
Immunodeficiency occurs when the immune system is less active than normal, resulting in recurring and life-threatening infections. In humans, immunodeficiency can be the result of a genetic disease such as severe combined immunodeficiency , acquired conditions such as HIV / AIDS , or the use of immunosuppressive medication .
Immunology is a branch of biology and medicine [1] that covers the study of immune systems [2] in all organisms.. Immunology charts, measures, and contextualizes the physiological functioning of the immune system in states of both health and diseases; malfunctions of the immune system in immunological disorders (such as autoimmune diseases, hypersensitivities, [3] immune deficiency, [4] and ...
Interleukin-1 receptor-associated kinase deficiency is an inherited disorder of the immune system. [6] This immunodeficiency leads to recurrent infections caused by the pyogenic bacteria, for example Streptococcus pneumoniae, Staphylococcus aureus and Pseudomonas aeruginosa, but not by other infectious agents.
The following outline is provided as an overview of and topical guide to immunology: . Immunology – study of all aspects of the immune system in all organisms. [1] It deals with the physiological functioning of the immune system in states of both health and disease; malfunctions of the immune system in immunological disorders (autoimmune diseases, hypersensitivities, immune deficiency ...