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Brain Hemorrhage (cont.)

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What causes a brain hemorrhage?

The most common cause of a brain hemorrhage is elevated blood pressure. Over time, elevated blood pressure can weaken arterial walls and lead to rupture. When this occurs, blood collects in the brain leading to symptoms of a stroke. Other causes of hemorrhage include aneurysm -- a weak spot in the wall of an artery -- which then balloons out and may break open. Arteriovenous malformations (AVM) are abnormal connections between arteries and veins and are usually present from birth and can cause brain hemorrhage later in life. In some cases, people with cancer who develop distant spread of their original cancer to their brain (metastatic disease) can develop brain hemorrhages in the areas of brain where the cancer has spread. In elderly individuals, amyloid protein deposits along the blood vessels can cause the vessel wall to weaken leading to a hemorrhagic stroke. Cocaine or drug abuse can weaken blood vessels and lead to bleeding in the brain. Some prescription drugs can also increase the risk of brain hemorrhage.

What are the symptoms of a brain hemorrhage?

Although headache is frequently associated with bleeding in the brain, it is not always present. Most often, the symptoms associated with a brain hemorrhage are dependent on the particular area of the brain that is involved. If the bleeding is in the part of the brain associated with vision, there may be problems seeing. Problems with balance and coordination, weakness on one side, numbness, or sudden seizure may occur. The speech center for many people is located in the left side of the brain and bleeding into this area may cause marked speech disturbances. If the bleeding is in the lower brain (brainstem), where most of the automatic body functions are regulated, a patient may become unresponsive or go into a coma. Additionally, sometimes symptoms of brain hemorrhage may come on very abruptly and rapidly worsen. Alternatively, the symptoms may progress slowly over many hours or even days.

Medically Reviewed by a Doctor on 4/18/2013

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Source: MedicineNet.com
http://www.medicinenet.com/brain_hemorrhage/article.htm

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