![]() This type of aneurysm usually happens from a traumatic injury. Or it may block blood flow through the artery. This may cause 1 side of the artery wall to balloon out. Blood leaks in between the layers of the wall. This type is caused by a tear along the length of the artery in the inner layer of the artery wall. This type is often linked to atherosclerosis.ĭissecting aneurysm. ![]() More than 1 of these may occur at the same time.įusiform aneurysm. It looks like a berry with a narrow stem. This is the most common type of cerebral aneurysm. The weak area is caused by too little muscle in the artery wall. The wall where the aneurysm forms is thin and weak. But arteries anywhere in the brain can get an aneurysm.Ī normal artery wall is made up of 3 layers. It makes the artery more likely to tear (rupture) in that spot.Ī cerebral aneurysm more often happens in an artery under the front part of the brain. It is also called an intracranial aneurysm or brain aneurysm. It is a common type of congenital heart disease.Cerebral Aneurysm What is a cerebral aneurysm?Ī cerebral aneurysm is a bulge in a weak area of the wall of a brain artery. People with coarctation of the aorta may also have a small increased risk of developing a brain aneurysm.Ĭoarctation of the aorta is the term used to describe narrowing of the main artery in the body (the aorta), which is present from birth (congenital). This is because these conditions can sometimes cause weaknesses in the walls of your blood vessels. Your risk of developing a brain aneurysm can be higher if you have a condition that affects your body tissues, such as Ehlers-Danlos syndrome or Marfan syndrome. Cysts are small sacs filled with fluid.īrain aneurysms can be more common in people with ADPKD, due to high blood pressure affecting the weakened blood vessel walls. Autosomal dominant polycystic kidney diseaseĪutosomal dominant polycystic kidney disease (ADPKD) is a genetic condition that causes multiple cysts to develop on the kidneys. The combination of these factors increases your risk of developing a brain aneurysm. Cocaine can inflame the walls of the blood vessels and raise your blood pressure. Cocaine abuseĬocaine abuse is considered to be another risk factor for brain aneurysms. Severe head injuryĪ brain aneurysm can develop after a severe head injury if the blood vessels in the brain are damaged, although this is very rare. In some cases, brain aneurysms are caused by weaknesses in the blood vessels present from birth. Pre-existing weakness in the blood vessels Oestrogen is thought to help maintain the elasticity of the blood vessels. This may be because levels of a hormone called oestrogen lower significantly after the menopause. Women are more likely to develop a brain aneurysm than men. This may be because the walls of the blood vessels are weakened over time by the constant pressure of blood flowing through them. Your risk of developing a brain aneurysm increases as you get older, with most cases diagnosed in people over the age of 40. Having a first-degree relative, such as a parent, brother or sister, with a history of a brain aneurysm may make you more likely to develop one than someone with no family history of the condition.
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