Understanding Anaemia of Chronic Disease: Symptoms and Lab Tests

Anaemia of chronic disease is a type of anaemia that occurs in people with long-term illnesses. It is characterized by a decrease in red blood cells, which are responsible for carrying oxygen throughout your body. Understanding the symptoms and lab tests behind this condition can help you manage it effectively.

What is Anaemia of Chronic Disease?

Anaemia of chronic disease is a condition that occurs when an underlying chronic illness affects the production and lifespan of red blood cells. Chronic diseases such as rheumatoid arthritis, chronic kidney disease, and infections can lead to this type of anaemia. It is not caused by a lack of iron, but rather by the body's response to the chronic condition. This response can involve inflammation and changes in how iron is utilized and stored in the body.

Symptoms of Anaemia of Chronic Disease

The symptoms of anaemia of chronic disease can be subtle and may overlap with symptoms of the underlying chronic condition. Common symptoms include:

• Fatigue: Feeling unusually tired or weak.
• Shortness of breath: Difficulty breathing during physical activity.
• Pale skin: A noticeable paleness, especially in the face and hands.
• Dizziness: Feeling lightheaded or dizzy, particularly when standing up quickly.
• Cold hands and feet: Experiencing cold extremities without a clear reason.

Lab Tests for Anaemia of Chronic Disease

Diagnosing anaemia of chronic disease involves several lab tests:

• Complete Blood Count (CBC): This test measures the number of red blood cells and their size. It can help identify anaemia by showing low red blood cell count and hemoglobin levels.
• Serum Ferritin: Ferritin is a protein that stores iron in the body. In anaemia of chronic disease, ferritin levels may be normal or high, unlike in iron-deficiency anaemia where they are low.
• C-reactive protein (CRP) and Erythrocyte Sedimentation Rate (ESR): These tests measure inflammation in the body, which is often elevated in chronic diseases and can contribute to anaemia.
• Transferrin Saturation: This test measures how much iron is bound to the protein transferrin. In anaemia of chronic disease, transferrin saturation is often low.

Why Do Chronic Diseases Cause Anaemia?

Chronic diseases can lead to anaemia through several mechanisms:

• Inflammation: Chronic inflammation can affect how the body uses and stores iron, making less iron available for red blood cell production.
• Reduced Red Blood Cell Production: Long-term illnesses can suppress the bone marrow's ability to produce red blood cells.
• Shortened Red Blood Cell Lifespan: Chronic diseases can lead to a shorter lifespan for red blood cells, reducing their overall count.

Frequently Asked Questions

What is the difference between anaemia of chronic disease and iron-deficiency anaemia? Anaemia of chronic disease is caused by the body's response to a chronic illness, while iron-deficiency anaemia is due to a lack of iron. Lab tests such as serum ferritin and transferrin saturation can help differentiate between the two.

Can anaemia of chronic disease be treated with iron supplements? Typically, iron supplements are not effective for anaemia of chronic disease because the issue is not a lack of iron but rather how the body handles it. Treatment focuses on managing the underlying chronic condition.

Is anaemia of chronic disease a permanent condition? The condition can persist as long as the underlying chronic illness is present. However, managing the chronic disease can help improve anaemia symptoms.

When to See a Doctor

If you have a chronic illness and experience symptoms like fatigue, shortness of breath, or dizziness, it is important to discuss these with your doctor. They can perform the necessary tests to determine if anaemia is present and recommend appropriate management strategies.

Disclaimer: This information is for educational purposes only. Always consult your healthcare provider for advice on your specific health situation.