White Blood Cell Disorders
Disease Information
Overview
White blood cells are the parts of blood that help the body fight infection. Also called leukocytes, they are made up of five different subtypes: basophils, eosinophils, lymphocytes, monocytes and neutrophils.
A number of disorders can impact these important cells and typically occur when:
- white blood cell count is low
- white blood cell count is high
- white blood cells are not functioning properly
The White Blood Cell Disorders Program at Boston Children's Hospital provides comprehensive treatment for benign (not cancerous) white blood cell disorders.

