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  2. Immunodeficiency - Wikipedia

    en.wikipedia.org/wiki/Immunodeficiency

    Humoral immune deficiency (including B cell deficiency or dysfunction), with signs or symptoms depending on the cause, but generally include signs of hypogammaglobulinemia (decrease of one or more types of antibodies) with presentations including repeated mild respiratory infections, and/or agammaglobulinemia (lack of all or most antibody production) which results in frequent severe infections ...

  3. Immune disorder - Wikipedia

    en.wikipedia.org/wiki/Immune_disorder

    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

  4. Immune dysregulation - Wikipedia

    en.wikipedia.org/wiki/Immune_dysregulation

    Immune system dysfunction, as seen in IPEX syndrome leads to immune dysfunction, polyendocrinopathy, enteropathy, X-linked (IPEX). IPEX typically presents during the first few months of life with diabetes mellitus, intractable diarrhea, failure to thrive, eczema, and hemolytic anemia. unrestrained or unregulated immune response.

  5. Humoral immune deficiency - Wikipedia

    en.wikipedia.org/wiki/Humoral_immune_deficiency

    Humoral immune deficiencies are conditions which cause impairment of humoral immunity, which can lead to immunodeficiency. It can be mediated by insufficient number or function of B cells , the plasma cells they differentiate into, or the antibody secreted by the plasma cells. [ 7 ]

  6. List of primary immunodeficiencies - Wikipedia

    en.wikipedia.org/wiki/List_of_primary_immuno...

    The complement system is part of the innate as well as the adaptive immune system; it is a group of circulating proteins that can bind pathogens and form a membrane attack complex. Complement deficiencies are the result of a lack of any of these proteins. They may predispose to infections but also to autoimmune conditions. [7]

  7. Primary immunodeficiency - Wikipedia

    en.wikipedia.org/wiki/Primary_immunodeficiency

    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.

  8. Common variable immunodeficiency - Wikipedia

    en.wikipedia.org/wiki/Common_variable...

    the person lacks an antibody immune response to protein antigens or immunization. Diagnosis is chiefly by exclusion, i.e., alternative causes of hypogammaglobulinemia, such as X-linked agammaglobulinemia, must be excluded before a diagnosis of CVID can be made. Diagnosis is difficult because of the diversity of phenotypes seen in people with CVID.

  9. Immune system - Wikipedia

    en.wikipedia.org/wiki/Immune_system

    The immune system is a network of biological systems ... Dysfunction of the immune system can cause ... (αβ) T cells and share the characteristics of helper T cells ...