IgG deficiency

IgG deficiency is a health condition characterized by low levels of Immunoglobulin G (IgG), a type of antibody that plays a crucial role in the immune system. This condition can lead to an increased susceptibility to infections.

Overview

Immunoglobulin G (IgG) is the most common type of antibody found in the blood circulation, making up 70-80% of the antibodies in the body. It plays a critical role in fighting bacterial and viral infections. IgG deficiency is a type of primary immunodeficiency, a group of disorders arising from defects in the immune system components.

Causes

The exact cause of IgG deficiency is unknown. However, it is believed to be genetic in nature. Some individuals may have a family history of primary immunodeficiency disorders.

Symptoms

People with IgG deficiency are more prone to infections, particularly those affecting the respiratory system, such as pneumonia and sinusitis. Other symptoms may include gastrointestinal infections, skin infections, and joint infections.

Diagnosis

Diagnosis of IgG deficiency involves blood tests to measure the levels of immunoglobulins in the blood. A significantly low level of IgG may indicate IgG deficiency.

Treatment

Treatment for IgG deficiency typically involves immunoglobulin replacement therapy, which involves the administration of IgG from healthy donors. This therapy can help boost the immune system and reduce the frequency of infections.

See Also

• Immunoglobulin A (IgA) deficiency
• Immunoglobulin M (IgM) deficiency
• Common variable immunodeficiency (CVID)
• Selective immunoglobulin deficiency

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