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Immunodeficiency disorders

  • Alternative Names



    The symptoms vary with the specific disorder.

    Signs and tests

    Your doctor might think you have an immunodeficiency disorder if you have:

    • Persistent, recurrent infections
    • Severe infection by microorganisms that do not usually cause severe infection

    Other signs include:

    • Poor response to treatment for infections
    • Delayed or incomplete recovery from illness
    • Certain types of cancers (such as Kaposi's sarcoma or non-Hodgkin's lymphoma)
    • Certain infections (including some forms of pneumonia or recurrent yeast infections)

    Tests used to help diagnose an immunodeficiency disorder may include:

    • Complement levels in the blood, or other tests to measure substances released by the immune system
    • Immunoglobulin levels in the blood
    • Protein electrophoresis (blood or urine)
    • T (thymus derived) lymphocyte count
    • White blood cell count