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Diseases » ADA Deficiency » Glossary

Glossary for ADA Deficiency

  • Adenosine deaminase deficiency: A rare disorder where a deficiency in the activity of adenosine deaminase causes severe immunodeficiency which in turn results in frequent severe bacterial, viral and fungal infections.
  • Autoimmune Hemolytic Anemia: Autoimmune hemolytic anemia is characterized by an abnormal immune system response which leads to the destruction of red blood cells and hence anemia. The severity of the condition varies depending on the underlying cause e.g. cytomegalovirus, hepatitis, HIV and lupus. The condition may develop gradually or occur suddenly and cause serious symptoms.
  • Common Variable Immunodeficiency: An immunodeficiency disorder involving low blood gamma globulin levels which results in an increased susceptibility to infections. The condition may be inherited or can be caused by certain drugs (levamisole, hydantoin and carbamazepine).
  • Genetic Disease: Any disease that is handed down to oneself through the chromosomes of ones parents
  • Immune disorders: Disorders that affect the immune system
  • Immune thrombocytopenia: A rare disorder where the body's immune system attacks blood platelets which affect the blood's ability to clot.
  • Lymphopenia: A decreased number of lymphocytes (white blood cells) in the blood which can be caused by many conditions
  • Neutropenia: Reduced number of granulocytes in the blood
  • SCID: Major failure of the immune system, usually genetic.


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