What does it mean to have a low white blood cell count?

A low white blood cell count could point to an autoimmune disorder. A low white blood cell count could also be caused by other factors.

Many diseases and disorders can cause a low white blood cell count. Some of these diseases are manageable, while others are more serious. AIDS, hepatitis, leukemia, lupus and aplastic anemia are some disorders that can cause this symptom. Certain medications, such as antihistamines, antibiotics and diuretics, can also make white blood cell production decrease. Serious complications, such as infections or organ failure, can arise if the problem is not treated quickly.