What Causes a Low Neutrophil Percentage?
Jun 15, 2021
Source: Cainiu Health
Dr. Pan Yongyuan
Introduction
In general, a low neutrophil percentage may result from viral infection, increased neutrophil consumption, hematologic disorders, or other causes—such as radiation therapy. Patients are advised to promptly visit a reputable hospital to determine the underlying cause of the low neutrophil percentage and receive appropriate, targeted treatment to avoid disease progression.
A low neutrophil percentage—commonly referred to as neutropenia—indicates a reduced absolute number of neutrophils, a type of white blood cell essential for phagocytosis and bacterial killing, and critical to the body’s defense against infection. So, what causes a low neutrophil percentage? Below is an explanation.
Causes of a Low Neutrophil Percentage
In general, a low neutrophil percentage may result from viral infections, excessive neutrophil consumption, hematologic disorders, or other factors. A detailed analysis follows:
1. Viral Infections
Numerous pathogens—including hepatitis viruses, influenza virus, and human immunodeficiency virus (HIV)—can cause severe systemic infections, often presenting with persistent high fever, pain, and generalized malaise. Such infections may lead to neutropenia.
2. Increased Neutrophil Consumption
In autoimmune disorders, the body’s immune system mistakenly attacks its own neutrophils, resulting in accelerated neutrophil destruction and consequently low neutrophil counts. Examples of such conditions include systemic lupus erythematosus (SLE) and rheumatoid arthritis. Patients should initiate appropriate pharmacotherapy promptly to prevent excessive energy depletion and disease progression.
3. Hematologic Disorders
Deficiencies in vitamins (e.g., vitamin B12) or folate may contribute to hematologic conditions such as aplastic anemia or leukemia. These disorders require pharmacologic management to control disease progression. Impaired bone marrow function—particularly compromised granulopoiesis—increases the likelihood of neutropenia.
Beyond the above three primary causes, other contributing factors may include radiation therapy. Patients are advised to seek evaluation at a reputable medical institution promptly to identify the underlying cause of neutropenia and receive targeted treatment—delayed diagnosis or management may lead to unpredictable complications. The above outlines the common causes of a low neutrophil percentage. We hope this information is helpful to you.
