What causes high white blood cell count during pregnancy?

Elevated white blood cell count during pregnancy may be caused by physiological changes of pregnancy, stress response, urethritis, pyelonephritis, systemic lupus erythematosus, and other reasons. It is recommended to seek timely medical evaluation to identify the underlying cause and receive appropriate symptomatic treatment under the guidance of a qualified physician. Specific analyses are as follows:

1. Physiological changes during pregnancy: During pregnancy, the expectant mother's immune system must adapt to the presence of the fetus, which often leads to an increase in white blood cell count. If the elevation is mild and not accompanied by other symptoms, it is considered a normal physiological change and does not require excessive concern.

2. Stress response: Anxiety, excessive fatigue, and other stressors during pregnancy may trigger a bodily stress response, potentially causing a temporary rise in white blood cell count. Pregnant women are advised to ensure adequate rest, avoid staying up late, and engage in activities such as yoga or jogging to help alleviate stress responses.

3. Urethritis: This may result from poor personal hygiene, uterine compression of the ureters, or other factors. When the urethra becomes infected by pathogens, white blood cells activate their immune function and typically enter the urine to engulf bacteria, potentially leading to increased white blood cell levels. Symptoms may include urgency and pain during urination. Pregnant women should follow medical advice and use medications such as ReLing Qing capsules, azithromycin granules, or cefixime granules for treatment.

4. Pyelonephritis: This condition may be associated with reduced immunity and bacterial infection. It commonly affects normal kidney function; local infection by pathogens can lead to elevated white blood cell levels in urine, along with symptoms such as decreased urine output and proteinuria. Pregnant women should follow medical guidance and use medications such as NiaoGanNing granules or WuLin HuaShi pills for treatment.

5. Systemic lupus erythematosus (SLE): This may be related to genetic factors, ultraviolet radiation exposure, and others. SLE typically causes immune system dysfunction, leading it to attack the body's own tissues. This may trigger the release of large numbers of white blood cells and may be accompanied by symptoms such as joint pain and fever. Pregnant women should receive treatment under a doctor’s supervision using medications such as mycophenolate mofetil for injection or clobetasol propionate cream.

In daily life, pregnant women are advised to drink plenty of warm water and relax their mood through listening to music or meditation, which can help reduce anxiety and support recovery.