Immunodeficiency Disorders Directory
Most of the time, the immune system protects the body from germs and other threats. But sometimes it gets off track and doesn't react or partially reacts. This is called immunodeficiency, and it makes you less able to fight infections. It can result from medications or illness, or you may have had it since birth. Follow the links below to find WebMD's comprehensive coverage about immunodeficiency disorders, how they are treated, and much more.
Medical Reference
What Is HIV?
Get the basics on AIDS/HIV from the experts at WebMD.
What Are Immune Deficiency Disorders?
Your immune system can be weakened by disease, medications or genetics. Learn more about these disorders.
Adenosine Deaminase Severe Combined Immunodeficiency (ADA-SCID): Symptoms, Causes, and Treatments
WebMD explains Adenosine Deaminase Severe Combined Immunodeficiency (ADA-SCID), an inherited condition that strips a child of his ability to fight infections.
Primary Immunodeficiency
The causes, symptoms, and treatment of primary immunodeficiency diseases (PIDDs), a group of conditions that makes it hard for your body to fight infections.