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Brain aneurysms develop silently. Some people may have inherited a tendency for weak blood vessels, which may lead to the development of aneurysms. Aneurysms in children are rare, and most aneurysms probably develop as a result of wear and tear on the arteries throughout a person’s lifetime. Occasionally, severe head trauma or infection may lead to the development of an aneurysm.



There are a number of risk factors that contribute to the formation of aneurysms, listed below. Two of the most significant are, fortunately, ones that can be controlled: cigarette smoking and hypertension.​​​

  • Smoking

  • High blood pressure 

  • Strong family history of brain aneurysms 

  • Age (over 40)

  • Gender: women have an increased risk of aneurysms

  • Race: people of color have an increased risk of ruptured aneurysms

  • Other disorders: Ehlers-Danlos syndrome, autosomal dominant polycystic kidney disease, Marfan syndrome, and fibromuscular dysplasia

  • Presence of an arteriovenous malformation. 

  • Congenital abnormality in the artery wall.

  • Drug use, particularly cocaine

  • Excessive alcohol use

  • Infection

  • Severe head trauma

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