Isolated primary immunoglobulin M deficiency

Isolated primary immunoglobulin M deficiency (IPMD) is a rare immunodeficiency disorder characterized by decreased levels of IgM while levels of other immunoglobulins are normal. The condition is associated with recurrent infections, atopy, and autoimmunity.

Signs and Symptoms

Patients with IPMD often present with recurrent infections, particularly of the respiratory tract. These may include sinusitis, otitis media, and pneumonia. In addition, patients may also experience atopic conditions such as asthma and eczema, as well as autoimmune disorders.

Causes

The exact cause of IPMD is not known. It is thought to be due to a defect in B-cell function, leading to decreased production of IgM. Some studies suggest a genetic component, but more research is needed to confirm this.

Diagnosis

Diagnosis of IPMD is based on the presence of recurrent infections, normal levels of other immunoglobulins, and low levels of IgM. Other potential causes of low IgM, such as certain medications and other immunodeficiency disorders, must be ruled out.

Treatment

Treatment for IPMD is primarily supportive and focuses on managing symptoms and preventing infections. This may include antibiotic therapy for infections, immunoglobulin therapy, and management of atopic and autoimmune conditions.

See Also

• Immunodeficiency
• Immunoglobulin M
• B cell

References

Isolated primary immunoglobulin M deficiency Resources
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