Question

What is the reason for decrease in white blood cell count?

Answer 1

A low white blood cell count usually is caused by:

Viral infections that temporarily disrupt the work of bone marrow

Certain disorders present at birth (congenital) that involve diminished bone marrow function

Cancer or other diseases that damage bone marrow

Autoimmune disorders that destroy white blood cells or bone marrow cells

Severe infections that use up white blood cells faster than they can be produced

Medications, such as antibiotics, that destroy white blood cellsSarcoidosis (collections of inflammatory cells in the body)