A low white blood cell count, called leukopenia, may be caused by bone marrow problems, autoimmune disorders such as lupus, diseases involving the liver or spleen, certain viral illnesses or severe bacterial infections, ... More »

Low white blood cell counts are commonly caused by viral infections, conditions that cause depleted bone marrow, severe infections, and certain medications that eradicate white blood cells, according to Mayo Clinic. Spec... More »

www.reference.com Health Medical Ranges & Levels

A congenital or autoimmune disorder, cancer, a viral infection, an overwhelmingly strong infection, or certain drugs may cause a low white blood cell count, Mayo Clinic advises. Damage to bone marrow, which produces whit... More »

A low white blood cell count, called leukopenia, may indicate bone marrow problems, autoimmune disorders, diseases involving the liver or spleen, certain cancers, or certain illnesses caused by viruses, states MedlinePlu... More »

www.reference.com Health Medical Ranges & Levels

The causes of a low white blood cell count include autoimmune disorders, severe bacterial infections, disorders of the spleen and liver, bone marrow deficiency, and some viral illnesses, states MedlinePlus. The immune sy... More »

www.reference.com Health Medical Ranges & Levels

Conditions or diseases that harm or damage bone marrow function or that directly destroy white blood cells are the common causes for low white blood cell count, according to Mayo Clinic. Such conditions or diseases may i... More »

www.reference.com Health Medical Ranges & Levels

A low white blood cell count is an indicator of serious infections, bone marrow deficiency, autoimmune disorders and certain types of cancer, according to MedlinePlus. Several types of medications, such as anti-seizure d... More »