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Deficiencies in red blood cells (aplastic anemia) and white blood cells (leukemia or lymphoma)
Aggressive cancer treatments (chemotherapy or radiation therapy)
Inherited (genetic) diseases (such as thalassemia)
Immune-system disorders (such as congenital neutropenia and severe-combined immunodeficiency syndrome)
Review Date 2/3/2025
Updated by: Warren Brenner, MD, Oncologist, Lynn Cancer Institute, Boca Raton, FL. Review provided by VeriMed Healthcare Network. Also reviewed by David C. Dugdale, MD, Medical Director, Brenda Conaway, Editorial Director, and the A.D.A.M. Editorial team.
