Causes of repeated high fever with low white blood cells

Leukopenia is mainly neutropenia, which can be divided into mild to severe according to the degree of neutropenia. Moderate to severe neutropenia, prone to infection and non-specific symptoms such as fatigue, dizziness, loss of appetite, etc. The causes include reduced production, external physical and chemical causes, and diseases affecting hematopoietic stem cells, such as aplastic anemia. Decreases due to dysneutrophils production and abnormal immunity and infectious neutropenia, as well as maturation disorders such as acute leukemia such as folate deficiency and metabolic disorders.