🦠microbiology review

Leukopenia

Written by the Fiveable Content Team • Last updated September 2025
Written by the Fiveable Content Team • Last updated September 2025

Definition

Leukopenia is a condition characterized by an abnormally low number of white blood cells (leukocytes) in the blood, which can increase susceptibility to infections. It is often a result of viral infections impacting the circulatory and lymphatic systems.

5 Must Know Facts For Your Next Test

  1. Leukopenia can be caused by viral infections such as HIV, Epstein-Barr virus, and cytomegalovirus.
  2. A low white blood cell count can make individuals more susceptible to bacterial and fungal infections.
  3. Common symptoms include frequent infections, fever, and fatigue.
  4. Diagnosis is typically made through a complete blood count (CBC) test.
  5. Treatment may involve addressing the underlying cause and possibly administering growth factors to stimulate white blood cell production.

Review Questions

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