Patients & CaregiversHealthcare ProfessionalsWorldwide
HomeAbout MerckProductsNewsroomInvestor RelationsCareersResearchLicensingThe Merck Manuals
THE MERCK MANUAL MEDICAL LIBRARY: The Merck Manual of Medical Information--Home Edition
Tips for better results
ABCDEFGHI
JKLMNOPQR
STUVWXYZ

Section

Subject

Topics

Common Variable Immunodeficiency

Pronunciations

Common variable immunodeficiency is an acquired immunodeficiency disorder resulting in very low antibody levels despite a normal number of B lymphocytes.

Common variable immunodeficiency usually develops between the ages of 10 and 20. In some people with this disorder, T lymphocytes malfunction. Recurring lung infections, particularly pneumonia, are common. Autoimmune disorders, including Addison's disease, thyroiditis, and rheumatoid arthritis, often develop. Diarrhea may occur, and food may not be absorbed well from the digestive tract.

Infusions of immune globulin are given throughout life, and antibiotics are promptly given to treat infections. Lifespan may be shortened.

Last full review/revision February 2003

Back to Top

Previous: Chronic Mucocutaneous Candidiasis

Next: DiGeorge Anomaly

Audio
Figures
Photographs
Pronunciations
Tables
Videos
Contact UsSite MapPrivacy PolicyTerms of UseCopyright 1995-2007 Merck & Co., Inc.