Haemophilia A: Symptoms, Causes, Diagnosis & Treatment

Written by Medicover Team and Medically Reviewed by Dr Nilesh Wasekar , Hematologists



Haemophilia A is an inherited bleeding disorder caused by a deficiency or absence of clotting factor VIII, making it difficult for blood to clot properly. People with the condition may experience prolonged bleeding, easy bruising, and spontaneous bleeding into joints or muscles. Early diagnosis and appropriate treatment, including factor VIII replacement therapy, help prevent complications and improve quality of life.


What Are the Types of Haemophilia A?

Haemophilia A is classified based on the amount of clotting factor VIII present in the blood.

  • Severe Haemophilia A: Factor VIII activity less than 1%, with frequent spontaneous bleeding.
  • Moderate Haemophilia A: Factor VIII activity between 1% and 5%, with bleeding after minor injuries.
  • Mild Haemophilia A: Factor VIII activity between 6% and 40%, with bleeding mainly after surgery or significant trauma.

What are the Symptoms of Haemophilia A?

Other symptoms include bleeding into joints and muscles, leading to pain and swelling. In severe cases, spontaneous bleeding can occur without any apparent cause. Regular monitoring and appropriate treatment can help manage these symptoms effectively.

  • Easy Bruising: People with haemophilia A may experience frequent and large bruises from minor injuries or no apparent cause.
  • Prolonged Bleeding: Even small cuts or injuries can lead to prolonged bleeding episodes that may be difficult to stop.
  • Joint Pain and Swelling: Haemophilia A can cause bleeding into the joints, leading to pain, swelling, and limited mobility.
  • Excessive Bleeding after Surgery or Dental Procedures: Individuals with haemophilia A may have difficulty controlling bleeding during medical procedures, requiring special precautions.
  • Blood in Urine or Stool: Hematuria (blood in urine) or melena (blood in stool) can occur in severe cases of haemophilia A due to internal bleeding.

What are the Causes of Haemophilia A?

This inherited bleeding disorder leads to prolonged bleeding and difficulty in forming blood clots, resulting in excessive bleeding even from minor injuries. haemophilia A is typically passed down through families, with males more commonly affected than females due to its X-linked recessive haemophilia a inheritance pattern.

  • haemophilia A is most commonly caused by an inherited genetic mutation in the F8 gene, which leads to a deficiency in clotting factor VIII.
  • Some haemophilia a causes may occur due to spontaneous mutations in the F8 gene, with no family history of the condition.
  • Certain medications, such as anticoagulants or haemophilia inhibitors, can interfere with the clotting process and contribute to the development of haemophilia A.
  • Liver disease or liver dysfunction can impair the production of clotting factors, including factor VIII, leading to haemophilia A.
  • Rarely, haemophilia A can be acquired in adulthood due to autoimmune reactions that destroy clotting factor VIII, leading to a deficiency and impaired blood clotting.

When to See a Doctor for Haemophilia A?

Consult a hematologist if you experience prolonged bleeding, frequent bruising, joint swelling, or have a family history of haemophilia. Early diagnosis and treatment help prevent serious bleeding complications and long-term joint damage.

You should see a doctor if you have:

  • Bleeding that lasts longer than expected
  • Frequent unexplained bruising
  • Painful, swollen joints after minor trauma
  • Excessive bleeding after surgery or dental procedures

Get medical help immediately if:

  • Head injury with severe headache or vomiting
  • Signs of intracranial bleeding, such as confusion or seizures
  • Heavy, uncontrolled bleeding
  • Difficulty breathing or swallowing due to bleeding in the neck or throat

These could be signs of life-threatening bleeding complications requiring urgent medical care.

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How is Haemophilia A Diagnosed?

To diagnose haemophilia A, your doctor will ask about your symptoms and family history, followed by a physical exam and blood tests to check for clotting factors. Genetic testing may also be done to confirm the haemophilia a diagnosis. Early detection is crucial for proper management of the condition and to prevent complications. Regular check-ups are important for monitoring and managing haemophilia A effectively.

  • Blood Tests: Diagnostic blood tests, such as a complete blood count (CBC) and clotting factor assays, can help identify abnormalities in clotting factors, indicating the presence of haemophilia A.
  • Genetic Testing: Genetic testing can determine specific gene mutations responsible for haemophilia A, providing a definitive diagnosis and helping assess the risk of passing the condition to offspring.
  • Bleeding History Evaluation: A detailed review of the patient's bleeding history, including frequency, severity, and spontaneous bleeding episodes, is crucial in diagnosing haemophilia A.
  • Physical Examination: A physical examination may reveal symptoms such as joint swelling, bruising, or other signs of bleeding disorders that can aid in the diagnosis of haemophilia A.

What are the Treatment Options for Haemophilia A?

Treatment options for haemophilia A include replacement therapy with clotting factor concentrates, which help the blood to clot properly. This can be given preventatively or during a bleeding episode. Other medications may be prescribed to manage symptoms or prevent complications. Physical therapy and lifestyle modifications can also help improve quality of life for individuals with haemophilia A.

  • Replacement therapy is a common treatment for haemophilia A, involving infusions of clotting factor VIII to help the blood clot properly and prevent excessive bleeding.
  • Desmopressin, a medication that can stimulate the release of stored clotting factors in the body, may be used in mild cases of haemophilia A to reduce bleeding episodes.
  • Haemophilia A patients may benefit from prophylactic treatment, which involves scheduled infusions of clotting factor to prevent bleeding episodes and protect the joints from damage.
  • Gene therapy is a haemophilia a treatment option for haemophilia A, aiming to introduce functional clotting factor genes into the body to enable the production of clotting factor VIII.
  • Managing and preventing joint damage through physical.

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What are the Risk Factors for Haemophilia A?

Risk factors for haemophilia A include genetics, with the condition being inherited through an X-linked recessive pattern. Being male increases the risk, as the gene mutation responsible for haemophilia A is located on the X chromosome. Family history of the condition also plays a significant role in determining an individual's risk of developing haemophilia A.

  • Family history of haemophilia A increases the risk of inheriting the condition, as it is a genetic disorder passed down through generations.
  • Being male is a significant risk factor, as haemophilia A is an X-linked recessive disorder that predominantly affects males.
  • Older age can increase the risk of developing complications related to haemophilia A, such as joint damage from recurrent bleeding episodes.
  • Certain medical procedures, such as surgery or dental work, can raise the risk of bleeding in individuals with haemophilia A.
  • Lack of access to appropriate medical care and treatment can increase the risk of complications and mortality in individuals with haemophilia A.

What is the Recovery Process for Haemophilia A?

Haemophilia A is a lifelong condition, and recovery focuses on effective management.

  • Regular monitoring and preventive treatment
  • Reduced bleeding episodes with proper therapy
  • Improved joint health with early care
  • Long-term management through medical support
  • Better quality of life with consistent treatment and follow-up

Frequently Asked Questions

1. Can Haemophilia A return even after successful treatment?

Yes, Haemophilia A can still lead to bleeding episodes or complications even after successful treatment. Regular monitoring, treatment, and care are essential to manage the condition and prevent relapses.

2. How does Haemophilia A affect my body?

Haemophilia A impairs the body's ability to form blood clots due to a deficiency of clotting factor VIII. This leads to prolonged bleeding, easy bruising, joint swelling, and internal bleeding, especially after trauma or surgery. Without treatment, it can cause severe health complications.

3. What is the difference between Haemophilia A and B?

The main difference between Haemophilia A and B is the clotting factor affected. Haemophilia A is caused by a deficiency of clotting factor VIII, while Haemophilia B results from a lack of clotting factor IX. Both cause similar bleeding symptoms but are different disorders at the genetic level.

4. Is Haemophilia A a rare disease?

Yes, Haemophilia A is a rare genetic disorder, affecting approximately 1 in 5,000 male births. It is caused by a deficiency of clotting factor VIII, which impairs blood clotting and leads to excessive bleeding, bruising, and difficulty controlling bleeding after injuries or surgery.

5. How can Haemophilia A affect the body in the long term?

Over time, Haemophilia A can cause chronic joint damage, muscle atrophy, and internal bleeding, which may lead to organ damage if bleeding episodes aren't controlled properly. Regular treatment can help manage these issues.

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