Aplastic Anaemia: Causes, Symptoms & Treatment in Canada

Aplastic anaemia is a rare and serious blood disorder that affects roughly two people per million each year, making it one of the most challenging haematological conditions diagnosed in Canada. It occurs when the stem cells in your bone marrow stop functioning properly, leaving your body unable to produce enough healthy red blood cells, white blood cells, and platelets. Without timely diagnosis and treatment, aplastic anaemia can become life-threatening.

What Causes Aplastic Anaemia and Who Is at Risk?

Understanding the causes of bone marrow failure is essential for early detection and better outcomes. When your marrow fails to produce adequate blood cells — a condition known as pancytopenia — your body loses its ability to carry oxygen efficiently, fight infections, and control bleeding. This guide explains what aplastic anaemia is, how it is diagnosed, and what treatment options are available to Canadians through the public and private healthcare systems.

What Is Aplastic Anaemia?

Treatment Options for Aplastic Anaemia in Canada

Treatment Option	How It Works	Key Benefits	Important Considerations
Allogeneic Stem Cell Transplant	Replaces damaged bone marrow with healthy donor stem cells	Potential cure, especially in younger patients; long-term remission rates above 80% with matched sibling donor	Best suited for patients under 40 with a matched donor; risk of graft-versus-host disease; available at major Canadian transplant centres
Immunosuppressive Therapy (IST)	Uses anti-thymocyte globulin (ATG) and cyclosporine to suppress the immune attack on bone marrow	Effective option when transplant is not possible; response rates of 60–70%	Risk of relapse and clonal evolution; requires close monitoring; horse ATG (hATG) is the preferred formulation in Canada
Eltrombopag (Revolade)	Thrombopoietin receptor agonist that stimulates platelet and blood cell production	Can be combined with IST to improve response rates; Health Canada approved	May cause liver enzyme elevations; requires regular blood work; not recommended as a standalone first-line therapy
Blood and Platelet Transfusions	Temporarily replaces red blood cells and platelets through transfusion	Provides rapid symptom relief; widely available across Canadian hospitals	Not a curative treatment; risk of iron overload with repeated transfusions; transfusion dependence can develop over time
Growth Factors (G-CSF)	Granulocyte colony-stimulating factor stimulates white blood cell production in the bone marrow	Reduces infection risk by increasing neutrophil counts; useful as supportive care	Temporary effect; typically used alongside other treatments rather than as primary therapy

Your bone marrow acts like a factory inside your bones. It produces three types of blood cells: red cells that carry oxygen, white cells that fight infection, and platelets that help your blood clot. With aplastic anaemia, this factory shuts down. The stem cells that build new blood cells are damaged or destroyed, so production stops.

The result is a dangerously low blood cell count across all three types. This condition is called pancytopenia, which simply means too few of each kind of blood cell. According to the World Health Organization, aplastic anaemia is classified as a rare disease, but its effects can be severe and rapid.

Aplastic anaemia can be inherited from birth or acquired later in life. The acquired form is more common and tends to affect teenagers and young adults, though it can develop at any age.

What Causes Aplastic Anaemia?

In most cases, acquired aplastic anaemia is an autoimmune condition. This means your immune system mistakenly attacks and destroys your own bone marrow stem cells. Doctors do not always know exactly why this happens — this is called idiopathic aplastic anaemia.

However, several known triggers can set off or contribute to the condition. These include:

• Exposure to toxic chemicals such as benzene or inorganic arsenic
• Certain medications, including some antibiotics, anti-inflammatory drugs, and chemotherapy agents
• Viral infections, including Epstein-Barr virus and cytomegalovirus
• Hepatitis (liver inflammation)
• Radiation therapy
• Pregnancy, in rare cases

Some people are at higher risk than others. For example, cancer patients receiving chemotherapy or radiation are more vulnerable. People with autoimmune conditions or certain inherited disorders affecting the bone marrow also face a greater risk. Unfortunately, there is currently no known way to prevent aplastic anaemia from developing.

Recognising the Symptoms of Aplastic Anaemia

The symptoms of aplastic anaemia come from having too few of each type of blood cell. Because three different cell types are affected, the warning signs can cover a wide range. It is important to recognise these early so you can seek help quickly.

Symptoms from Low Red Blood Cells

Red blood cells carry oxygen through your body. When you do not have enough of them, you may feel:

• Persistent tiredness or weakness
• Shortness of breath, even with light activity
• Pale skin, pale gums, or pale fingernails
• Dizziness or lightheadedness
• Cold hands and feet
• Chest pain or rapid heartbeat

Symptoms from Low White Blood Cells

White blood cells are your immune system’s soldiers. A low white cell count means your body cannot fight infections well. As a result, you may experience:

• Frequent or severe infections
• Fever that does not go away
• Flu-like symptoms that linger for weeks

Symptoms from Low Platelets

Platelets help your blood clot when you bleed. Without enough platelets, even minor injuries can cause problems. Watch for:

• Easy bruising or bleeding
• Small red or purple spots on the skin (called petechiae)
• Nosebleeds or bleeding gums
• Blood in your stool
• Unusually heavy menstrual periods

In addition to these main symptoms, some people also develop skin rashes, nausea, or notice that infections take much longer than usual to heal. If you are experiencing several of these symptoms at once, it is important to speak with a healthcare provider as soon as possible.

How Is Aplastic Anaemia Diagnosed?

Diagnosing aplastic anaemia starts with a simple blood test. A complete blood count (CBC) measures the levels of red cells, white cells, and platelets in your blood. If all three counts are significantly low, your doctor will want to investigate further.

A family doctor or walk-in clinic can order this initial blood test. If the results raise concern, you will likely be referred to a hematologist — a doctor who specialises in blood disorders. From there, additional tests may include:

• Bone marrow biopsy: A small sample of bone marrow is taken, usually from the hip bone, and examined under a microscope. This is the most definitive test for aplastic anaemia.
• Liver function tests to check for hepatitis or other liver issues
• Ultrasound to look at organs such as the spleen and lymph nodes
• Chest X-ray to rule out infection or other conditions

Early diagnosis is critical. The sooner aplastic anaemia is identified, the sooner treatment can begin — and the better the outcome tends to be. According to the Mayo Clinic’s overview of aplastic anaemia, untreated cases can progress quickly and become life-threatening.

Treatment Options for Aplastic Anaemia

Treatment for aplastic anaemia depends on how severe the condition is, your age, and your overall health. There is no single approach that works for everyone. Your hematologist will create a personalised plan based on your specific situation.

Blood Transfusions

Transfusions do not cure aplastic anaemia, but they provide relief by temporarily replacing the missing blood cells. They help manage symptoms while other treatments take effect. Transfusions are often used as a short-term measure.

Immunosuppressive Therapy

Because aplastic anaemia is often caused by an overactive immune system, immunosuppressive medications are a key treatment. These drugs calm the immune system so it stops attacking the bone marrow. This approach works well for many patients, particularly those who are not candidates for a transplant.

Stem Cell Transplant

A hematopoietic stem cell transplant (also called a bone marrow transplant) is the only potential cure for aplastic anaemia. It replaces the damaged bone marrow with healthy donor stem cells. This treatment works best in younger patients with a well-matched donor, typically a sibling. In Canada, transplant programmes are available at major academic health centres across provinces such as Ontario, British Columbia, Alberta, and Quebec.

If left undiagnosed or untreated, aplastic anaemia can lead to life-threatening bleeding, severe infections, organ damage, and in some cases, it can progress to conditions like leukaemia. This is why prompt treatment is so important.

Supportive Care and Mental Health

Living with a serious blood disorder takes a toll on more than just your body. Many patients and their families experience anxiety, depression, and emotional distress after a diagnosis. This is completely understandable and very common.

Mental health support — such as counselling, group therapy, or peer support programmes — can play a vital role in recovery. Feeling connected to others who understand your experience can improve your quality of life and even support your medical treatment. Ask your healthcare provider about referrals to social workers or psychologists through your provincial health plan.

When to See a Doctor

If you or a family member are experiencing any of the symptoms described above — especially unusual fatigue, frequent infections, unexplained bruising, or bleeding — do not wait. See your family doctor or visit a walk-in clinic as soon as possible.

A simple blood test is often the first step. Your doctor can order a complete blood count and, if needed, refer you to a specialist. In Canada, referrals to hematologists are covered under provincial health plans, though wait times may vary by province.

If you experience sudden, heavy bleeding, high fever, or severe chest pain, go to your nearest emergency department right away. These may be signs of a serious complication that needs immediate care.

As always, this article is for general information only. Please speak with your doctor or a qualified healthcare provider before making any decisions about your health. Health Canada also provides resources to help Canadians find the right care for serious conditions.

Frequently Asked Questions About Aplastic Anaemia

Key Takeaways

• Aplastic anaemia is a rare but serious condition where the bone marrow stops producing enough blood cells.
• It affects approximately two people per million each year and can develop at any age, though it is more common in teenagers and young adults.
• Common symptoms include fatigue, frequent infections, unusual bruising, and bleeding — all caused by low blood cell counts.
• Diagnosis starts with a blood test from your family doctor or walk-in clinic, followed by referral to a hematologist if needed.
• Treatment options include blood transfusions, immunosuppressive therapy, and stem cell transplant, depending on severity.
• Mental and emotional support is an important part of managing this condition for both patients and their families.
• If you notice concerning symptoms, see a doctor promptly. Early diagnosis significantly improves outcomes.
• Always consult a qualified healthcare provider for personal medical advice. Information in this article is for general educational purposes only.