A high white blood cell count (WBC), also known as leukocytosis, is often a sign that your body is fighting off an infection. Various types of infections can lead to an increase in WBCs, including:
- Bacterial infections: Sepsis, a serious bloodstream infection, can significantly raise WBC levels. Other bacterial infections, like pneumonia and urinary tract infections (UTIs), can also trigger a rise in WBCs.
- Viral infections: Many viral infections, including the common cold, flu, and mononucleosis, can cause an increase in WBCs. Tuberculosis, a bacterial infection of the lungs, can also lead to higher WBC counts.
- Fungal infections: Certain fungal infections, like candidiasis (yeast infection), can also cause leukocytosis.
While an elevated WBC count is often associated with infection, it's important to remember that it can also be caused by other factors, such as:
- Autoimmune disorders: Conditions like lupus and rheumatoid arthritis can sometimes cause an increase in WBCs.
- Allergies: Severe allergic reactions can trigger a rise in WBCs.
- Physical injury or stress: Trauma or significant stress can also lead to a temporary increase in WBC levels.
- Leukemia or Hodgkin's disease: These cancers of the blood and lymphatic system can cause abnormally high WBC counts.
If you have a high WBC count, it's essential to consult a healthcare professional to determine the underlying cause and receive appropriate treatment.
