White blood cells (WBCs) are an integral part of the immune system. They play a key role in helping the body fight off infection. White blood cell disorders may occur due to various factors including but not limited to infections, excessive WBCs, insufficient WBCs, autoimmune diseases or cancers affecting bone marrow or blood cells. The exact treatment will depend on what caused it. 

Common treatments for white blood cell disorders include: 

• Antibiotics: for treating bacterial infections and for lowering the number of WBCs 
• Antiparasitic medication:for treating parasitic infections that typically decrease the WBC count
• Chemotherapy or radiation therapy: for treating cancer 
• Blood transfusion: to replace damaged WBCs with healthy cells obtained from a donor
• Immunosuppressants: medications that dampen immune response in individuals with autoimmune diseases
• Colony-Stimulating Factors (CSF):medications that stimulate the bone marrow to increase production of WBCs 
• Stem cell transplantation:to replace impaired bone marrow with healthy bone marrow obtained from a donor, facilitating the production of healthy, functional WBCs
• Glucocorticoids: hormones that help to increase WBC production