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Cerebral arteriosclerosis can cause serious health problems. If the walls of an artery are too thick, or a blood clot becomes caught in the narrow passage, blood flow to the brain can become blocked and cause an ischemic stroke. When the thickening and hardening is uneven, arterial walls can develop bulges (called aneurysms). If a bulge ruptures, bleeding in the brain can cause a hemorrhagic stroke. Both types of stroke can be fatal.

Cerebral arteriosclerosis is also related to a condition known as vascular dementia, in which small, symptom-free strokes cause cumulative damage and death to neurons in the brain. Personality changes in the elderly, such as apathy, weeping, transient befuddlement, or irritability, might indicate that cerebral arteriosclerosis is present in the brain. Computer tomography (CT) and magnetic resonance imaging (MRI) of the brain can help reveal the presence of cerebral arteriosclerosis before ischemic strokes, hemorrhagic strokes, or vascular dementia develop.

Is there any treatment?
Treatment for cerebral arteriosclerosis can include medications or surgery. Physicians also may recommend treatments to help people control high blood pressure, quit cigarette smoking, and reduce cholesterol levels, all of which are risk factors for cerebral arteriosclerosis.

What is the prognosis?
Cerebral arteriosclerosis can lead to life threatening health events such as ischemic or hemorrhagic strokes. People who survive stroke may have long-term neurological and motor impairments.

What research is being done?
The NINDS supports an extensive research program on stroke and conditions that can lead to stroke. Much of this research is aimed at finding ways to prevent and treat conditions such as cerebral arteriosclerosis.