People at highest risk for lymphocytopenia have one of the diseases, conditions, or factors that can cause a low lymphocyte count. This includes people who have:

  • AIDS or other infectious diseases
  • Autoimmune disorders
  • Blood cancers or other blood diseases
  • Certain inherited diseases or conditions

People who have had steroid therapy or radiation or chemotherapy (treatments for cancer) also are at increased risk. For more information, go to "What Causes Lymphocytopenia?"

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Updated: December 30, 2013