What are the causes of brain aneurysms?
A brain aneurysm or cerebral aneurysm is a bulging vessel in the brain. A ruptured aneurysm can cause bleeding in the brain and is life-threatening. Aneurysms may be present from birth or may develop later in life.GeneticsGenetic factors make it more likely that some people will develop aneurysms. According to E-medicine Health, up to 20 percent of people with bleeding from an aneurysm have a relative with a brain aneurysm.ConditionsSome conditions present at birth increase the risk of brain aneurysms. Examples include polycystic kidney disease and neurofibromatosis.Risk FactorsHigh blood pressure, hardening of the arteries and certain blood disorders are risk factors for brain aneurysms. Cigarette smoking, heavy alcohol consumption and drug abuse also increase the risk of developing this condition.Other CausesOther causes of a cerebral aneurysm include head injury, tumors and infections. According to National Institute of Neurological Disorders, some experts believe that oral contrace
