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Brain Aneurysm Misdiagnosis Claims

Brain aneurysm compensation can support you on your road to recovery and help improve your quality of life.

A photo of Mrs Swaffield

I am very happy and satisfied with the settlement you achieved for me and the service was excellent and thank you very much

Mrs E.Swaffield
Loughborough

Claiming for a brain aneurysm

A brain aneurysm is often a terrifying diagnosis. But in most cases, care is of an excellent standard and those that are at high risk of rupturing and causing complications are treated. However, there are patients that are affected by misdiagnosis or don’t receive the level of care they should from those responsible, including when the aneurysm ruptures, potentially causing brain damage or death.

We know that at a time when you want to focus on recovery, deciding to take a legal claim forward against those responsible can be scary. But misdiagnosis of brain aneurysm compensation can support you on your road to recovery and help improve your quality of life. Not only can financial compensation alleviate financial concerns that you may have but it can pay for care, equipment, or adaptations that you may now require as a result of complications. The misdiagnosis of a brain aneurysm can have serious consequences, leaving those affected feeling vulnerable and unable to trust the healthcare system. A case against those responsible can help patients better understand why they were affected and move on.

We understand how complex the legal system can be to those seeking to make a medical negligence claim. But we’ll be on hand every step of the way. With a brain aneurysm misdiagnosis lawyer working on your behalf, you can rest assured that we’ll build a case that gives you the best possible chance of success and compensation.

The time limit on making a brain aneurysm claim

If you would like to make a medical claim against those responsible for medical negligence you have experienced, there is a time limit. You must take a case forward within three years from the ‘date of knowledge’.

The term ‘date of knowledge’ can be confusing but it simply refers to the point that you first realised a mistake had been made. This could be, for instance, once you’re accurately diagnosed. In complex cases, it can be difficult to understand exactly how long you have left to take a claim forward. Our expert team can help here. We’ll listen to your experience and use our skills and insights to provide you with a timeframe.

While you do have up to three years to act, we recommend to our clients that they take action as soon as possible. We understand that it can be a daunting prospect after you’ve been misdiagnosed with a brain aneurysm but we’ll take the hassle out of your hands. From the very beginning of the process, we’ll work on your behalf to build a case against those responsible and this can often be easier the quicker a case is started, strengthening your chance of success.

If you do not claim within the set time period, your claim will be considered ‘statute barred’ or ‘out of time’ and will unfortunately not be taken further. There are two exceptions to this rule, in the case of children and if the negligence directly led to a fatality. In these cases suing the NHS for negligence is still possible as the date on which time begins to run is the date of the child’s 18th birthday, and in the case of fatalities, from the date of death.

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Our medical negligence team has years of experience working on a wide variety of brain injury cases so we understand just how difficult a decision it can be to bring a brain aneurysm case.

Brain aneurysm misdiagnosis claims team

That’s why we are committed to guiding you through every step of the process. We ensure that your claim is handled carefully and professionally by our specialist solicitors, while working alongside medical experts, to guarantee the best results for you.

Our brain injury team is headed by Laura Morgan who has a wealth of experience in leading complicated, high-value brain aneurysm cases.

Laura is recognised within the legal profession as a leader in the field of medical negligence and serious injury compensation. Laura has acted in a wide range of cases over her 17 years of practice and has particular expertise in acting for children who have suffered brain injury due to mismanaged birth or surgical errors, and in managing claims that have resulted in the death of a loved one. Laura has achieved a number of large settlements including £5.4 million for a 7-year-old and £4 million for an 11-year-old child.

Laura’s expertise and dedication to her clients is recognised in the Chambers guide to the Legal Profession in which she was praised for the efficiency of her approach to case handling and described as “tenacious and detail-oriented”.

Laura has been a member of the Law Society Clinical Negligence Panel since 2005 and accredited as a Senior Litigator in the Association of Personal Injury Lawyers (APIL) since 2006. Laura is also a member of the specialist lawyers panel for Action against Medical Accidents (AvMA), the UK’s leading charity committed to patient safety and justice.

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The effects of medical negligence can be devastating for the individual and their families, so securing appropriate compensation for them as quickly as possible is our top priority.

Laura Morgan

Director of Medical Negligence

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“I found the staff to be friendly, helpful, courteous and they kept me well informed on a regular basis”

Mrs. Vora,
Loughborough

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  For a confidential chat, call one of our experts today 0151 550 5228

10 simple steps to claim

Step
1
Obtaining your medical records
Step
2
Providing your statement of what happened
Step
3
Minimising your loss
Step
4
Establishing that a breach of duty occurred
Step
5
Estabilishing the effect of the breach of duty
Step
86
Preparing your case for CourtCalculating the value of your claim
Step
7
Proving your loss
Step
68
Calculating the value of your claimPreparing your case for Court
Step
9
Attending the trial in Court
Step
10
Awarding your compensation claim

Your questions... answered

What is a brain aneurysm?

An aneurysm is a bulge in a blood vessel caused by a weakness in the wall of the vessel. Aneurysms can develop in any blood vessel in the body but one of the most common places for them to occur is in the brain, also known as an intracranial or cerebral aneurysm.

Brain aneurysms typically don’t cause any symptoms unless they rupture but this can have serious complications, including brain damage. Around 60% of those that have a subarachnoid haemorrhage, where bleeding can cause extensive brain damage, will die within two weeks and those that survive have a high risk of being left with severe brain damage or a disability.

As a result of the potential risks of the condition, a late brain aneurysm negligence diagnosis can have a serious impact on the prognosis and the health of the patient concerned.

How can a brain aneurysm be misdiagnosed?

There are several ways that brain aneurysms can be misdiagnosed, severely affecting the outcome of the condition.

For instance, a doctor misdiagnosed brain aneurysm can occur if you visit your GP with the signs of an unruptured aneurysm but they fail to recognise the signs. Having the condition diagnosed before it ruptures can improve a patient’s chance of survival and significantly reduce the effects of lifelong complications. Even if it's recommended that treatment isn’t conducted, a quick diagnosis can allow for careful monitoring.

In some misdiagnosed brain aneurysm cases, the delay in achieving an accurate diagnosis is down to the test results being read incorrectly or not followed up. In some cases, the common tests for a reputed brain aneurysm do not show the conditions. As a result, doctors should order a lumbar puncture if symptoms indicate they could be linked to an aneurysm. Where this doesn’t occur it can lead to a significant delay in brain aneurysm diagnosis, which can, in turn, increase the risk of complications, including significant brain damage.

A delay in diagnosis of a brain aneurysm due to medical negligence could be the grounds for a compensation claim, reflecting the damage that has been caused.

What conditions can a brain aneurysm be misdiagnosed as?

Despite a generally excellent level of care in the UK, it is still possible for cases of misdiagnosis of a brain aneurysm to occur. Case studies of misdiagnosis of a brain aneurysm show that the condition has been mistaken for:

  • Migraines
  • Cluster headache
  • Eye pain
Read less

Can I claim for a misdiagnosed brain aneurysm?

If you’ve been affected by medical negligence and those responsible for your care let you down, you may have a brain aneurysm misdiagnosis lawsuit you can take forward.

Whether the issues arose due to GP misdiagnosis of a brain aneurysm or test results were read inaccurately we could help you. A ruptured brain aneurysm is a serious condition that can lead to long-term complications and even prove fatal if not treated swiftly. As a result, it’s vital that those responsible for you care act urgently.

You may have a claim you can take forward if you experienced the following:

  • A doctor missing the initial warning signs of a brain aneurysm
  • Symptoms of a brain aneurysm not being followed up
  • An existing brain aneurysm not being monitored as frequently as it should have been
  • The signs of a ruptured brain aneurysm not being treated as an emergency
  • Treatment for a high-risk brain aneurysm or a ruptured aneurysm being unnecessarily delayed

If you believe you have a claim, speaking to our team of expert brain aneurysm misdiagnosis lawyers can help you understand the process. We’ll listen to your case and offer you professional advice that you know you can rely on.

Read less

Can I claim for a misdiagnosed brain aneurysm on behalf of a loved one?

Yes, it is possible to claim for medical negligence on behalf of a loved one. For instance, if your child or partner had a brain aneurysm that was misdiagnosed leading to complications or death; you may be able to claim brain aneurysm misdiagnosis compensation. 

If you’re making a claim that has affected someone else, the same procedures will still need to be followed as in typical brain aneurysms misdiagnosis compensation claims. This includes being subject to a three-year time limit and demonstrating that there were opportunities for medical professionals to achieve an accurate diagnosis.

How much compensation will I get?

How much compensation each person making a medical claim will receive varies, taking a wide range of factors into account, such as brain aneurysm negligence complications and the effect it has had on quality of life.

When you contact Your Legal Friend, we’ll take the time to listen to your experiences and understand how you have been affected. Taking this into consideration we will give your claim a value that accurately reflects the brain aneurysm malpractice that you experienced. Without learning more about your case, we can’t say how much compensation you could receive if successful but every year the NHS pays out millions to those affected by medical negligence.

How long do I have to make a claim?

Those affected by medical negligence that would like to make brain aneurism claims for the effect it has had must make a claim against those responsible within three years.

The time limit on any medical claim starts from the ‘date of knowledge’. The term refers to the point that you first realised a mistake had been made in your level of care. This could be when you’re first accurately diagnosed or it could even occur after this point. Brain aneurysm misdiagnosis claims can be complex and if you’re unsure how long you have left to make a claim, we can help you. Using our skills and knowledge of medical negligence law and previous cases, we will help you pinpoint your ‘date of knowledge’.

You can act at any point during these three years. However, we recommend that you start your brain aneurysm lawsuit as soon as possible. This means you’ll be able to better recall your experiences, ensuring your witness statement is as detailed as possible. We’ll also request other pieces of documents to support your case, such as your medical records, and these may be easier to obtain closer to your experiences.

Read less

What causes a brain aneurysm?

The brain requires a large supply of blood that is delivered through four main blood vessels that then divide into smaller vessels. A brain aneurysm occurs when the wall of these vessels weakens, allowing a bulge to occur.

In many cases, it’s not possible to pinpoint exactly why a brain aneurysm has occurred but there are associated risk factors that increase a person’s likelihood of developing the condition.

Common risk factors are:

  • Smoking– Research indicates that the majority of people that are diagnosed with a brain aneurysm smoke or have done so in the past.
  • High blood pressure– A high blood pressure can increase the pressure that is placed on the walls of a blood vessel, increasing the likelihood of an aneurysm occurring.
  • Family history– Having a parent, sibling, or another first degree relative with a history of a brain aneurysm can indicate that you’re more likely to suffer too. However, only around 2% of people with a family history of a ruptured brain aneurysm experience it themselves.
  • Age– Most people diagnosed with a brain aneurysm are aged over 40 and the risk increases as you age.
  • Sex– Women are more likely to develop a brain aneurysm than men.

Other risk factors linked to brain aneurysms include:

  • Pre-existing weakness in the blood vessels
  • Severe head injury
  • Cocaine abuse
  • Autosomal dominant polycystic kidney disease
  • Body tissue disorders
  • Coarctation of the aorta
Read less

What are the symptoms of a brain aneurysm?

In the majority of cases, an unruptured brain aneurysm doesn’t cause any symptoms, meaning it is often left undiagnosed. Where an aneurysm is large or presses against tissues or nerves within the brain, symptoms may include:

  • Visual disturbances, including double vision and loss of vision
  • Pain above or around the eyes
  • Numbness or weakness on one side of the face
  • Difficulty speaking
  • Headaches
  • Loss of balance
  • Difficulty concentrating or problems with short-term memory.

Where a brain aneurysm has ruptured the most common symptom, is sudden, blinding pain. Other signs of a ruptured brain aneurysm include:

  • Feeling or being sick
  • Stiff neck or neck pain
  • Sensitivity to light
  • Blurred or double vision
  • Sudden confusion
  • Loss of consciousness
  • Seizures
  • Weakness on one side of the body or in limbs

A ruptured brain aneurysm is a serious, life-threatening condition and the delayed diagnosis of a brain aneurysm can have serious consequences. As a result, anyone experiencing the symptoms should treat it as a medical emergency and call 999.

Read less

How is a brain aneurysm diagnosed?

How a brain aneurysm is successfully diagnosed will often depend on whether it has ruptured or not.

MRI scan – A MRI scan uses magnetic fields and radio waves to produce detailed images of your brain. An MRI scan is often used to identify aneurysms that haven’t ruptured.

CT scan – If a brain aneurysm has ruptured causing bleeding in the brain, a CT scan is the preferred method of achieving a diagnosis.

Lumbar puncture – A CT scan isn’t always accurate in identifying a ruptured brain aneurysm. If your symptoms suggest that an aneurysm is to blame but the results of a CT scan don’t confirm this, a lumbar puncture may be ordered. This is where a sample of the fluid that surrounds the brain and spine is taken to test for signs of bleeding.

If a CT scan, MRI scan, or lumbar puncture suggests that either a ruptured or unruptured brain aneurysm is present, an angiogram or arteriogram will be carried out. This provides medical professionals with additional information to plan your treatment.

A quick and accurate diagnosis is vital for delivering effective treatment for a brain aneurysm that could save a person’s life or minimise the long-term effects. If you’ve experienced missed brain aneurysm diagnosis, you may be able to make a compensation claim, reflecting the seriousness of the medical negligence you experienced and its impact on your health.

Read less

How is a brain aneurysm treated?

Brain aneurysms can be treated with surgery. However, as the surgery itself has a risk of complications, including brain damage or stroke, it is only recommended if there’s a high risk that the aneurysm will rupture. A surgical team will take a range of factors into consideration when deciding whether to recommend surgery, including the size and location of the aneurysm.

As preventive surgery, there are two techniques that may be recommended to stop the blood flowing into the aneurysm and reduce the risk of it rupturing – neurosurgical clipping and endovascular coiling. Which option is recommended will depend on your own personal circumstances.

Where a brain aneurysm has ruptured, emergency treatment will be to be given to reduce the risk of the blood supply to the brain becoming severely disrupted. Emergency treatment aims to reduce the risk of long-term side effects, such as brain damage.

If you or a loved one has experienced a wrong brain aneurysm diagnosis, which meant that vital surgery was delayed, you may be able to make a failure to diagnose claim against those that are responsible. You should be able to rely on those in charge of your care to take the necessary steps to first diagnose and then treat a brain aneurysm.

Read less

How often is a brain aneurysm misdiagnosed?

There aren’t any official brain aneurysm misdiagnosis statistics for the UK to demonstrate how widespread the problem is but there have been instances of patients with a brain aneurysm suffering due to medical negligence. In brain aneurysm misdiagnosis cases it may be possible to make a claim for compensation, reflecting how those involved have suffered.

Previous research on the NHS has indicated that as many as 1 in 6 patients are initially misdiagnosed across all conditions, indicating that there could be many misdiagnosed brain aneurysm stories.

What are the statistics of brain aneurysms?

It’s difficult for experts to estimate the number of people affected by brain aneurysms because they often cause no symptoms and pass undetected. According to the NHS, estimates range from 1 in 20 people experiencing a brain aneurysm to just 1 in 100.

However, the number of brain aneurysms that rupture is very small. Each year just 1 in 12,500 people will have a ruptured brain aneurysm.

An aneurysm is a bulge in a blood vessel caused by a weakness in the wall of the vessel. Aneurysms can develop in any blood vessel in the body but one of the most common places for them to occur is in the brain, also known as an intracranial or cerebral aneurysm.

Brain aneurysms typically don’t cause any symptoms unless they rupture but this can have serious complications, including brain damage. Around 60% of those that have a subarachnoid haemorrhage, where bleeding can cause extensive brain damage, will die within two weeks and those that survive have a high risk of being left with severe brain damage or a disability.

As a result of the potential risks of the condition, a late brain aneurysm negligence diagnosis can have a serious impact on the prognosis and the health of the patient concerned.

There are several ways that brain aneurysms can be misdiagnosed, severely affecting the outcome of the condition.

For instance, a doctor misdiagnosed brain aneurysm can occur if you visit your GP with the signs of an unruptured aneurysm but they fail to recognise the signs. Having the condition diagnosed before it ruptures can improve a patient’s chance of survival and significantly reduce the effects of lifelong complications. Even if it's recommended that treatment isn’t conducted, a quick diagnosis can allow for careful monitoring.

In some misdiagnosed brain aneurysm cases, the delay in achieving an accurate diagnosis is down to the test results being read incorrectly or not followed up. In some cases, the common tests for a reputed brain aneurysm do not show the conditions. As a result, doctors should order a lumbar puncture if symptoms indicate they could be linked to an aneurysm. Where this doesn’t occur it can lead to a significant delay in brain aneurysm diagnosis, which can, in turn, increase the risk of complications, including significant brain damage.

A delay in diagnosis of a brain aneurysm due to medical negligence could be the grounds for a compensation claim, reflecting the damage that has been caused.

What conditions can a brain aneurysm be misdiagnosed as?

Despite a generally excellent level of care in the UK, it is still possible for cases of misdiagnosis of a brain aneurysm to occur. Case studies of misdiagnosis of a brain aneurysm show that the condition has been mistaken for:

  • Migraines
  • Cluster headache
  • Eye pain
Read less

If you’ve been affected by medical negligence and those responsible for your care let you down, you may have a brain aneurysm misdiagnosis lawsuit you can take forward.

Whether the issues arose due to GP misdiagnosis of a brain aneurysm or test results were read inaccurately we could help you. A ruptured brain aneurysm is a serious condition that can lead to long-term complications and even prove fatal if not treated swiftly. As a result, it’s vital that those responsible for you care act urgently.

You may have a claim you can take forward if you experienced the following:

  • A doctor missing the initial warning signs of a brain aneurysm
  • Symptoms of a brain aneurysm not being followed up
  • An existing brain aneurysm not being monitored as frequently as it should have been
  • The signs of a ruptured brain aneurysm not being treated as an emergency
  • Treatment for a high-risk brain aneurysm or a ruptured aneurysm being unnecessarily delayed

If you believe you have a claim, speaking to our team of expert brain aneurysm misdiagnosis lawyers can help you understand the process. We’ll listen to your case and offer you professional advice that you know you can rely on.

Read less

Yes, it is possible to claim for medical negligence on behalf of a loved one. For instance, if your child or partner had a brain aneurysm that was misdiagnosed leading to complications or death; you may be able to claim brain aneurysm misdiagnosis compensation. 

If you’re making a claim that has affected someone else, the same procedures will still need to be followed as in typical brain aneurysms misdiagnosis compensation claims. This includes being subject to a three-year time limit and demonstrating that there were opportunities for medical professionals to achieve an accurate diagnosis.

How much compensation each person making a medical claim will receive varies, taking a wide range of factors into account, such as brain aneurysm negligence complications and the effect it has had on quality of life.

When you contact Your Legal Friend, we’ll take the time to listen to your experiences and understand how you have been affected. Taking this into consideration we will give your claim a value that accurately reflects the brain aneurysm malpractice that you experienced. Without learning more about your case, we can’t say how much compensation you could receive if successful but every year the NHS pays out millions to those affected by medical negligence.

Those affected by medical negligence that would like to make brain aneurism claims for the effect it has had must make a claim against those responsible within three years.

The time limit on any medical claim starts from the ‘date of knowledge’. The term refers to the point that you first realised a mistake had been made in your level of care. This could be when you’re first accurately diagnosed or it could even occur after this point. Brain aneurysm misdiagnosis claims can be complex and if you’re unsure how long you have left to make a claim, we can help you. Using our skills and knowledge of medical negligence law and previous cases, we will help you pinpoint your ‘date of knowledge’.

You can act at any point during these three years. However, we recommend that you start your brain aneurysm lawsuit as soon as possible. This means you’ll be able to better recall your experiences, ensuring your witness statement is as detailed as possible. We’ll also request other pieces of documents to support your case, such as your medical records, and these may be easier to obtain closer to your experiences.

Read less

The brain requires a large supply of blood that is delivered through four main blood vessels that then divide into smaller vessels. A brain aneurysm occurs when the wall of these vessels weakens, allowing a bulge to occur.

In many cases, it’s not possible to pinpoint exactly why a brain aneurysm has occurred but there are associated risk factors that increase a person’s likelihood of developing the condition.

Common risk factors are:

  • Smoking– Research indicates that the majority of people that are diagnosed with a brain aneurysm smoke or have done so in the past.
  • High blood pressure– A high blood pressure can increase the pressure that is placed on the walls of a blood vessel, increasing the likelihood of an aneurysm occurring.
  • Family history– Having a parent, sibling, or another first degree relative with a history of a brain aneurysm can indicate that you’re more likely to suffer too. However, only around 2% of people with a family history of a ruptured brain aneurysm experience it themselves.
  • Age– Most people diagnosed with a brain aneurysm are aged over 40 and the risk increases as you age.
  • Sex– Women are more likely to develop a brain aneurysm than men.

Other risk factors linked to brain aneurysms include:

  • Pre-existing weakness in the blood vessels
  • Severe head injury
  • Cocaine abuse
  • Autosomal dominant polycystic kidney disease
  • Body tissue disorders
  • Coarctation of the aorta
Read less

In the majority of cases, an unruptured brain aneurysm doesn’t cause any symptoms, meaning it is often left undiagnosed. Where an aneurysm is large or presses against tissues or nerves within the brain, symptoms may include:

  • Visual disturbances, including double vision and loss of vision
  • Pain above or around the eyes
  • Numbness or weakness on one side of the face
  • Difficulty speaking
  • Headaches
  • Loss of balance
  • Difficulty concentrating or problems with short-term memory.

Where a brain aneurysm has ruptured the most common symptom, is sudden, blinding pain. Other signs of a ruptured brain aneurysm include:

  • Feeling or being sick
  • Stiff neck or neck pain
  • Sensitivity to light
  • Blurred or double vision
  • Sudden confusion
  • Loss of consciousness
  • Seizures
  • Weakness on one side of the body or in limbs

A ruptured brain aneurysm is a serious, life-threatening condition and the delayed diagnosis of a brain aneurysm can have serious consequences. As a result, anyone experiencing the symptoms should treat it as a medical emergency and call 999.

Read less

How a brain aneurysm is successfully diagnosed will often depend on whether it has ruptured or not.

MRI scan – A MRI scan uses magnetic fields and radio waves to produce detailed images of your brain. An MRI scan is often used to identify aneurysms that haven’t ruptured.

CT scan – If a brain aneurysm has ruptured causing bleeding in the brain, a CT scan is the preferred method of achieving a diagnosis.

Lumbar puncture – A CT scan isn’t always accurate in identifying a ruptured brain aneurysm. If your symptoms suggest that an aneurysm is to blame but the results of a CT scan don’t confirm this, a lumbar puncture may be ordered. This is where a sample of the fluid that surrounds the brain and spine is taken to test for signs of bleeding.

If a CT scan, MRI scan, or lumbar puncture suggests that either a ruptured or unruptured brain aneurysm is present, an angiogram or arteriogram will be carried out. This provides medical professionals with additional information to plan your treatment.

A quick and accurate diagnosis is vital for delivering effective treatment for a brain aneurysm that could save a person’s life or minimise the long-term effects. If you’ve experienced missed brain aneurysm diagnosis, you may be able to make a compensation claim, reflecting the seriousness of the medical negligence you experienced and its impact on your health.

Read less

Brain aneurysms can be treated with surgery. However, as the surgery itself has a risk of complications, including brain damage or stroke, it is only recommended if there’s a high risk that the aneurysm will rupture. A surgical team will take a range of factors into consideration when deciding whether to recommend surgery, including the size and location of the aneurysm.

As preventive surgery, there are two techniques that may be recommended to stop the blood flowing into the aneurysm and reduce the risk of it rupturing – neurosurgical clipping and endovascular coiling. Which option is recommended will depend on your own personal circumstances.

Where a brain aneurysm has ruptured, emergency treatment will be to be given to reduce the risk of the blood supply to the brain becoming severely disrupted. Emergency treatment aims to reduce the risk of long-term side effects, such as brain damage.

If you or a loved one has experienced a wrong brain aneurysm diagnosis, which meant that vital surgery was delayed, you may be able to make a failure to diagnose claim against those that are responsible. You should be able to rely on those in charge of your care to take the necessary steps to first diagnose and then treat a brain aneurysm.

Read less

There aren’t any official brain aneurysm misdiagnosis statistics for the UK to demonstrate how widespread the problem is but there have been instances of patients with a brain aneurysm suffering due to medical negligence. In brain aneurysm misdiagnosis cases it may be possible to make a claim for compensation, reflecting how those involved have suffered.

Previous research on the NHS has indicated that as many as 1 in 6 patients are initially misdiagnosed across all conditions, indicating that there could be many misdiagnosed brain aneurysm stories.

It’s difficult for experts to estimate the number of people affected by brain aneurysms because they often cause no symptoms and pass undetected. According to the NHS, estimates range from 1 in 20 people experiencing a brain aneurysm to just 1 in 100.

However, the number of brain aneurysms that rupture is very small. Each year just 1 in 12,500 people will have a ruptured brain aneurysm.

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