What Causes Elevated White Blood Cell Count?

Hello! The main causes of elevated white blood cell (WBC) count include: 1. **Infection**: Clinically, an elevated WBC count—especially when accompanied by symptoms such as fever—often indicates infection. This is commonly referred to as an inflammatory response, which typically manifests clinically with two key signs: (1) increased WBC count and (2) fever. 2. **Stress-related conditions**: However, an elevated WBC count does not always signify infection or inflammation. For instance, physiological stress—such as vigorous exercise, acute fear, or severe anxiety—can also trigger a transient, stress-induced rise in WBCs. Nevertheless, clinically significant WBC elevation usually reflects an underlying inflammatory process. I hope this information is helpful to you. Wishing you good health!