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severe combined immunodeficiency (SCID), which is also known as alymphocytosis.common variable immunodeficiency (CVID).There are more than 200 primary immunodeficiency disorders.Įxamples of primary immunodeficiency disorders include: If you’re born with a deficiency from a genetic cause, it’s called primary immunodeficiency disease. What are the different types of immunodeficiency disorders?Īn immune deficiency disease or disorder occurs when the immune system is not working as expected. Your immune system can also be temporarily weakened by a stem cell or organ transplant. While a weaker immune system is typically caused by certain diseases, malnutrition, and certain genetic disorders, it can also temporarily be caused by medications such as anticancer drugs and radiation therapy. This means your body can’t fight off infections or viruses as well as people who are not immunocompromised. If you have a weaker immune system, you’re immunocompromised. Certain T cells destroy foreign or atypical cells.Įxamples of antigens that your B and T cells might need to fight off include:Īn immunodeficiency disorder disrupts your body’s ability to defend itself against these antigens. B cells release antibodies specific to the disease your body detects. B and T cells fight invaders called antigens. These are white blood cells classified as B cells and T cells. These organs process and release lymphocytes. Your immune system includes the following organs: Acquired disorders are more common than congenital disorders. An acquired, or secondary, disorder is one you get later in life. A congenital, or primary, disorder is one you were born with. Immunodeficiency disorders are either congenital or acquired.
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This type of disorder makes it easier for you to catch viruses and bacterial infections. Immunodeficiency disorders prevent your body from fighting infections and diseases.