What is a High White Blood Cell Count (Leukocytosis)?
Your body's immune system relies on white blood cells (WBCs), also called leukocytes, to fight off infections, germs, and foreign invaders. Leukocytosis is the medical term for having a higher-than-normal number of WBCs in your blood. A standard blood test called a Complete Blood Count (CBC) is what detects this elevation. Instead of viewing leukocytosis as an isolated condition, it's more helpful to think of it as an immune response to a problem in your body.
There are five main types of white blood cells, and the specific type that is elevated can offer clues to the underlying cause:
- Neutrophils: Most common type, often elevated during bacterial infections.
- Lymphocytes: Increased with viral infections, but also seen in some cancers like leukemia.
- Eosinophils: Rise in response to allergies, asthma, or parasitic infections.
- Monocytes: Often elevated with chronic infections or autoimmune diseases.
- Basophils: Least common, but their increase can signal allergies or bone marrow disorders.
The Symptoms You Feel Are from the Underlying Cause
It is a crucial point that a high white blood cell count by itself does not cause noticeable symptoms. The discomfort, fatigue, or other signs you experience are a direct result of the condition that prompted your immune system to produce more white blood cells. This is why a doctor will focus on identifying the root cause rather than simply treating the WBC count itself.
Common Symptoms Linked to High WBC Causes
Your body's inflammatory response to an infection or other issue is the source of many symptoms. Below are common feelings and signs that may accompany an elevated white blood cell count:
General Signs of Infection and Inflammation
- Fever and Chills: Your body raises its temperature to make it harder for bacteria and viruses to survive.
- Fatigue and Weakness: The immense energy your body uses to fight off an infection can leave you feeling drained and tired.
- Body Aches and Pain: Inflammation can cause a general feeling of soreness and muscle aches throughout your body.
- Loss of Appetite: It's common to lose your appetite when your body is sick, as energy is redirected towards healing.
- Sweating: This can be a response to the body regulating its temperature, especially during fever. Night sweats can be a particular concern and should be monitored.
Symptoms of Specific Issues
- Respiratory Problems: If the cause is a respiratory infection or allergy, you may experience difficulty breathing, wheezing, or a persistent cough.
- Skin Issues: Rashes, hives, or an itchy skin reaction can point to allergies or a specific infection.
- Swelling: Localized swelling, pain, warmth, and redness can occur around an area of infection or joint inflammation.
- Unintended Weight Loss: This is a more serious symptom that may be associated with chronic inflammation, stress, or a more serious underlying condition.
Understanding Different Causes and Their Symptoms
Understanding the potential source of your leukocytosis can be helpful. The table below compares symptoms often seen with different underlying causes. This information is for educational purposes only and not a substitute for professional medical advice.
Underlying Cause | Common Symptoms | Severity | Associated Issues |
---|---|---|---|
Infection (Bacterial/Viral) | Fever, chills, fatigue, body aches, swollen glands, cough, sore throat | Varies (mild to severe) | Pneumonia, strep throat, flu, mononucleosis |
Inflammatory Conditions (e.g., Rheumatoid Arthritis) | Joint pain, swelling, chronic fatigue, stiffness | Chronic | Autoimmune diseases |
Allergic Reactions | Skin rash, hives, itching, wheezing, runny nose | Acute or chronic | Asthma, severe allergies |
Physical/Emotional Stress | Temporary spike in WBC count, no specific symptoms from the count itself | Temporary | Injury, intense exercise, anxiety |
Certain Medications (e.g., Corticosteroids) | Can raise WBC count without other symptoms | Dependent on medication | Medication side effect |
When to Seek Medical Attention
While a high WBC count is often temporary and related to a routine illness, certain signs should prompt a visit to your doctor. It's crucial to seek professional medical advice if you experience any of the following:
- Persistent or unexplained fever, fatigue, or weight loss.
- Symptoms that worsen or don't improve with time.
- Soaking night sweats on a regular basis.
- Any sign of infection that won't heal, such as a wound with pus or swelling.
- Unusual bleeding or bruising.
- Signs of hyperviscosity syndrome (in very rare and extreme cases), such as stroke symptoms (facial drooping, confusion, dizziness), vision problems, chest pain, or difficulty breathing.
Your healthcare provider may perform a complete blood count (CBC) with a differential to analyze the specific types of white blood cells. This, along with a physical exam and other tests, can help pinpoint the root cause of your elevated count and determine the best course of treatment.
How is a High WBC Count Diagnosed and Treated?
Diagnosis is typically straightforward and starts with a simple blood test. Your doctor will likely order a Complete Blood Count (CBC) with a differential. This test not only measures the total number of WBCs but also breaks down the count for each of the five types. The results, combined with your reported symptoms and medical history, allow a doctor to determine the underlying cause. In some cases, a bone marrow biopsy or other specialized tests might be necessary to confirm a diagnosis, especially if a serious condition is suspected.
Treatment for a high white blood cell count is entirely dependent on the underlying issue. For an infection, antibiotics may be prescribed. For inflammatory conditions like rheumatoid arthritis, anti-inflammatory medications may help. In more serious cases, such as leukemia, specialized treatments like chemotherapy or stem cell transplants may be required. In less severe instances, like a temporary spike due to stress, no treatment may be needed beyond managing the stress itself.
Understanding the Prognosis
For many, a high WBC count is a temporary marker of a successful immune response and resolves once the underlying issue is treated. It's important to remember that most cases of leukocytosis are not serious. However, for those with chronic conditions or malignancies, monitoring and managing the underlying disease is crucial. Regular communication with your healthcare provider and adherence to their treatment plan are the most important steps in managing any condition causing an elevated white blood cell count. For more information on what a CBC test entails, you can visit the MedlinePlus: White Blood Count Test.
Conclusion
In summary, the way you feel when your white blood cells are high is not from the increased count itself, but rather from the underlying condition driving that increase. Symptoms like fever, fatigue, and body aches are your body's immune system at work. Recognizing these signs and seeking medical advice when they are persistent or severe is the best course of action. This allows for the proper diagnosis and treatment of the root cause, bringing your WBC count and your health back to a normal state.