A number of related conditions of a brain aneurysm are associated with formation of the bulge while others arise as a result of the condition.
Hemorrhagic stroke poses the most serious danger as blood flowing into brain tissue can kill cells causing permanent damage. Seizures related to blood leaking into the brain can lead to other serious complications. A subarachnoid hemorrhage (SAH), bleeding into the space between the skull and the brain, can lead to hydrocephalus (fluid on the brain), which can press on surrounding tissue. Following a rupture, the blood vessels may contract, restricting blood flow to vital areas, a condition called vasospasm. Patients also may lose movement or sensation in parts of the face and the body, and endure excess pressure in their skull.
Several related conditions of a brain aneurysm are associated with inherited risk factors. Among these are:
- Partial or complete deficiency of alpha-glucosidase, an enzyme that converts glycogen to glucose
- Alpha 1-antitrypsin – a deficiency could cause cirrhosis of the liver and hepatitis
- Fibromuscular dysplasia – an arterial disease that affects young and middle-aged women
- Klinefelter syndrome – a male genetic condition
- Noonan’s syndrome – gene-related abnormal development of parts of the body