Leukopenia (low white blood cell count) has many possible causes and can increase the risk of infection. Reviewed by a board-certified physician.

Blood dyscrasias are disorders affecting blood cells, plasma proteins, and more. Learn about the types, symptoms, causes, diagnosis, and treatment.

White blood cells may be affected by certain disorders. Understanding symptoms and what a diagnosis means can help you navigate choices for treatment.

The most common white blood cell disorders are cancer, including lymphomas, leukemias, and myelomas. Here are facts and statistics you should know.

A low white blood cell count can lead to infections, impaired wound healing, and can increase the risk of cancer.

White blood cells (WBCs) are an important part of the immune system. Learn about the different cell types and their function in fighting infection.

A blood smear test is used to evaluate specific types of blood cells under a microscope. Learn about its uses and what blood smear results might mean.

Hematopoiesis is how your body makes its various kinds of blood cells, as well as the platelets that help your blood to clot. Learn how it works.

Chemotherapy treats cancer, but it can also impact your white blood cell count and leave you at risk for infection. Learn how to increase WBCs during chemo.

White blood cell count may decrease from cancer or its treatments. Learn more about white blood cell count and cancer and how to prevent infections.