What is what does it mean when wbc is high?

A high white blood cell count, also known as leukocytosis, generally indicates that the body is fighting an infection, inflammation, an allergic reaction, or even cancer. White blood cells (WBCs) are a crucial part of the immune system, responsible for defending the body against foreign invaders.

• Infection: Bacterial, viral, fungal, or parasitic infections are common causes of elevated WBC counts. The body produces more WBCs to combat the infection.

• Inflammation: Inflammatory conditions like rheumatoid arthritis, lupus, and inflammatory bowel disease can trigger an increase in WBCs.

• Allergic Reaction: Severe allergic reactions can cause a temporary rise in WBCs.

• Leukemia%20and%20Myeloproliferative%20Disorders: Certain cancers, especially leukemia and other myeloproliferative disorders, cause the bone marrow to produce abnormally large numbers of WBCs.

• Stress: Physical or emotional stress can temporarily elevate WBC counts.

• Medications: Certain medications, such as corticosteroids, can increase WBC counts.

• Smoking: Chronic smoking can lead to a persistently elevated WBC count.

It's important to note that a high WBC count is not a diagnosis in itself. It's a sign that something is happening in the body. Further testing is usually needed to determine the underlying cause. The specific type of WBC that is elevated can also provide clues about the cause of the leukocytosis. A doctor will consider the patient's medical history, symptoms, and other test results to determine the appropriate course of action.