Neutropenia

Editor-In-Chief: Prab R Tumpati, MD
Obesity, Sleep & Internal medicine
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Neutropenia
Synonyms	Agranulocytosis, granulocytopenia
Pronounce	N/A
Specialty	N/A
Symptoms	Fever, infections, mouth ulcers, sore throat
Complications	Sepsis, pneumonia, abscess
Onset	Any age
Duration	Varies
Types	N/A
Causes	Chemotherapy, autoimmune disorders, bone marrow disorders, infections
Risks	Cancer treatment, HIV/AIDS, autoimmune diseases
Diagnosis	Complete blood count, bone marrow biopsy
Differential diagnosis	Leukopenia, anemia, thrombocytopenia
Prevention	N/A
Treatment	Granulocyte colony-stimulating factor, antibiotics, immunosuppressive therapy
Medication	N/A
Prognosis	Varies depending on cause
Frequency	Common in patients undergoing chemotherapy
Deaths	N/A

Neutrophil

Neutropenia is a hematologic disorder characterized by an abnormally low concentration of neutrophils, a type of white blood cell, in the bloodstream. As neutrophils play a pivotal role in the body's defense mechanism against bacterial and fungal infections, individuals with neutropenia are at an increased risk of infections.

Etiology

Neutropenia can result from a multitude of factors:

PB Neutrophil

• Bone marrow disorders: Conditions like leukemia, myelofibrosis, or vitamin B12 and folic acid deficiencies can cause neutropenia.
• Chemotherapy and Radiation: These cancer treatments can temporarily reduce the number of neutrophils.
• Certain Medications: Drugs, including antipsychotics and certain antibiotics, can result in drug-induced neutropenia.
• Autoimmune disorders: Conditions like lupus or rheumatoid arthritis can target and destroy neutrophils.
• Infections: Some diseases, such as tuberculosis or HIV/AIDS, can lead to neutropenia.

Classification

Neutropenia is typically categorized based on its severity:

• Mild Neutropenia: Neutrophil count of 1,000 to 1,500/mcL.
• Moderate Neutropenia: Neutrophil count of 500 to 1,000/mcL.
• Severe Neutropenia: Neutrophil count of less than 500/mcL.

The duration of neutropenia can also vary, from acute (short term) to chronic (lasting several months to years).

Symptoms

While neutropenia itself might be asymptomatic, the reduction in the neutrophil count compromises the immune system, leading to:

• Increased susceptibility to infections.
• Prolonged fever.
• Ulcers in the mouth.
• Gum and dental issues.
• General fatigue.

Diagnosis

Neutropenia is typically diagnosed via a complete blood count (CBC), which measures the number of white and red blood cells in the bloodstream. If neutropenia is detected, further tests may be ordered to ascertain its root cause.

Management

Treatment modalities are contingent on the cause, severity, and associated complications of neutropenia:

• Granulocyte colony-stimulating factor (G-CSF): Medications like filgrastim stimulate bone marrow to produce more neutrophils.
• Antibiotics or antifungals: Given either as a preventive measure or to treat active infections.
• Bone Marrow Transplant: In cases where the bone marrow is not producing neutrophils efficiently.
• Lifestyle Measures: Patients may be advised to follow hygiene practices, avoid crowded places, and abstain from certain foods to reduce infection risk.

Summary

Neutropenia is a significant condition that can drastically compromise an individual's immune system. Prompt diagnosis and targeted treatment are essential to prevent associated complications, especially infections.

See Also

• White Blood Cells
• Bone Marrow Disorders
• Chemotherapy
• Granulocyte colony-stimulating factor
• Complete Blood Count

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