Swollen Artery in the Brain Underlying Cause
Many experts believe that cerebral aneurysms are inherited. High blood pressure and atherosclerosis probably play a role in accelerating the development of a cerebral aneurysm.
Conditions that have been associated with cerebral aneurysms include:
- Marfan's syndrome
- Ehlers-Danlos syndrome
- Fibromuscular dysplasia:
- An arterial disease of unknown cause typically affecting the medium and large arteries of young to middle-aged women. Commonly affected arteries include the carotid arteries in the neck and the renal arteries, supplying the kidneys.
- Polycystic kidney disease
- Syphilis infection in the brain
- Coarctation of the aorta
Other possible causes of cerebral aneurysm include:
Continue to Swollen Artery in the Brain Anatomy
- Ashley WW Jr, Chicoine MR. Subarachnoid hemorrhage caused by posterior inferior cerebellar artery aneurysm with an anomalous course of the atlantoaxial segment of the vertebral artery. Case report and review of literature. J Neurosurg. 2005 Aug;103(2):356-60. 
- Salary M, Quigley MR, Wilberger JE Jr. Relation among aneurysm size, amount of subarachnoid blood, and clinical outcome. J Neurosurg. 2007 Jul;107(1):13-7. 
- van Gijn J, Kerr RS, Rinkel GJ. Subarachnoid haemorrhage. Lancet. 2007 Jan 27;369(9558):306-18.