Common variable immune deficiency: Difference between revisions

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Created page with "== Clinical Manifestations == * Recurrent sinopulmonary infections * Chronic diarrhea, including IBD-like disease * Can have concurrent autoimmune disease, including ITP, AIHA, rheumatoid arthritis, pernicious anemia, autoimmune thyroiditis, and vitiligo * Can have signs and symptoms of allergic rhinitis and asthma * Can have splenomegaly and lymphadenopathy * Increased risk of non-Hodgkin lymphoma == Differential Diagnosis == * Primary hyp..."
 
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#REDIRECT [[Common variable immunodeficiency]]
== Clinical Manifestations ==

* Recurrent sinopulmonary infections
* Chronic diarrhea, including IBD-like disease
* Can have concurrent autoimmune disease, including [[ITP]], [[AIHA]], [[rheumatoid arthritis]], [[pernicious anemia]], [[autoimmune thyroiditis]], and [[vitiligo]]
* Can have signs and symptoms of allergic rhinitis and asthma
* Can have splenomegaly and lymphadenopathy
* Increased risk of [[non-Hodgkin lymphoma]]

== Differential Diagnosis ==

* Primary hypogammaglobulinemia
** IgG subclass deficiency
** Hyperimmunoglobulin M syndrome
** Other combined immunodeficiency
* Secondary hypogammaglobulinemia
** Drugs, including [[rituximab]], [[CAR-T]], [[BiTE]], long-term [[corticosteroids]], certain antiseizure medications, cytotoxic chemotherapy
** Malignancy, including [[CLL]], [[lymphoma]], [[multiple myeloma]], and [[Waldenström macroglobulinemia]]
** Thymoma with hypogammaglobulinemia ([[Good syndrome]])

== Diagnosis ==

* Over the age of 4 years
* All of the following:
** Low IgA and/or IgM
** Poor or absent response to immunization
** Absence of other immunodeficiency

Latest revision as of 20:32, 6 October 2025