Brain aneurysm ruptures are rare. 1 in 12,000 people suffer a rupture, which is about 5,000 people annually. Although these can be life-changing, the good news is that when detected early, aneurysms are highly treatable.
Brain aneurysms are more common than you think. around 1 in 30 people, about two million people in the UK, are living with an unruptured aneurysm today. The majority of people live completely normal, healthy lives without ever knowing they have one.
If you have been diagnosed with an unruptured brain aneurysms, you are not alone. Thousands of people live well with monitored aneurysms, and hundreds are successfully treated every month on the NHS, returning to their active lives.
Brain aneurysm ruptures are rare. 1 in 12,000 people suffer a rupture, which is about 5,000 people annually. Although these can be life-changing, the good news is that when detected early, aneurysms are highly treatable.
Brain aneurysms are more common than you think. around 1 in 30 people, about two million people in the UK, are living with an unruptured aneurysm today. The majority of people live completely normal, healthy lives without ever knowing they have one.
While brain aneurysms are difficult to screen for, 1 in 8 people with an aneurysm have the hereditary condition, meaning families could get access to screening. This means 650 cases annually could be detected early to change outcomes.
Brain aneurysm ruptures are rare. 1 in 12,000 people suffer a rupture, which is about 5,000 people annually. Although these can be life-changing, the good news is that when detected early, aneurysms are highly treatable.
Brain aneurysms are more common than you think. around 1 in 30 people, about two million people in the UK, are living with an unruptured aneurysm today. The majority of people live completely normal, healthy lives without ever knowing they have one.
Hereditary Brain Aneurysm Support is here for people with brain aneurysms and families at increased risk of brain aneurysms
Hereditary Brain Aneurysm Support (HBA Support) is the UK's first patient-centred organisation to provide information and support for people affected by hereditary brain aneurysms and their families.
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We support people affected by hereditary brain aneurysms, building a community for families that have been given a hereditary brain aneurysm diagnosis or suspect there is a pattern or cluster in their family.
Since 2022, we've been supporting hundreds of people affected, working with the medical, research, and policy communities to improve information and research.
A brain aneurysm is a bulge in a blood vessel caused by a weakness in the blood vessel wall, usually where it branches.
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How Do Brain Aneurysms Form?
A brain aneurysm develops when blood pressure pushes against a weakened spot in a blood vessel wall. Over time, this pressure can cause the wall to thin and bulge. Think of it like an overstretched balloon. Several risk factors may contribute to this process:
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Family history of brain aneurysms
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High blood pressure (hypertension)
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Smoking
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Connective tissue disorders
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Head trauma
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Age and sex (more common in people over 40 and in women)
Thousands of people live well with brain aneurysms without knowing they carry one. Only when they rupture (burst) can they be fatal or life-changing for the person and their family.
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When a brain aneurysm ruptures, it is usually very sudden and without warning and it causes a life-threatening subarachnoid haemorrhage (SAH).
Most cases of brain aneurysms are sporadic, meaning they are sudden and have no genetic hereditary pattern.
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However, sometimes, cases of brain aneurysms cluster or run in families. This is rare, but it can impact families severely when it happens.​
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If you have a strong family history of brain aneurysms, there is a 2.3% to 29.4% chance of having an unruptured brain aneurysm, compared with 0.2% - 8.8% of the general population.
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