More risk factors
Furthermore, people with certain health conditions are at a higher risk, such as: arteriovenous malformation, autosomal dominant polycystic kidney disease, fibromuscular dysplasia, Marfan syndrome, and Vascular Ehlers-Danlos syndrome, according to Cleveland Clinic. Additionally, people with high blood pressure can experience weakened artery walls over time. Smoking, excessive alcohol use, and substance use (especially cocaine) can also cause this weakening.
The effects of the rupture
The bleeding from the rupture tends to be small and last only a few seconds, but the leak can greatly damage and even kill the surrounding brain cells. It can also increase pressure in the skull, which can inhibit blood flow and oxygen supply to the brain. This can rapidly cause loss of consciousness, permanent brain damage, and death, according to the Mayo Clinic
