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. Two of the most significant are, fortunately, ones that can be controlled: cigarette smoking and high blood pressure (hypertension).
Family history is also a risk factor and sometimes MRI scans and CT angiography scans are used to screen for brain aneurysms in patients with a family history.