A brain hemorrhage is a type of stroke. It's caused by an artery in the brain bursting and causing localized bleeding in the surrounding tissues. This bleeding kills brain cells.
The Greek root for blood is hemo. Hemorrhage literally means "blood bursting forth." Brain hemorrhages are also called cerebral hemorrhages, intracranial hemorrhages, or intracerebral hemorrhages. They account for about 13% of strokes.
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When blood from trauma irritates brain tissues, it causes swelling. This is known as cerebral edema. The pooled blood collects into a mass called a hematoma. These conditions increase pressure on nearby brain tissue, and that reduces vital blood flow and kills brain cells.
Bleeding can occur inside the brain, between the brain and the membranes that cover it, between the layers of the brain's covering or between the skull and the covering of the brain.
What Causes Bleeding in the Brain?
There are several risk factors and causes of brain hemorrhages. The most common include:
Head trauma. Injury is the most common cause of bleeding in the brain for those younger than age 50.
High blood pressure. This chronic condition can, over a long period of time, weaken blood vessel walls. Untreated high blood pressure is a major preventable cause of brain hemorrhages.
Aneurysm. This is a weakening in a blood vessel wall that swells. It can burst and bleed into the brain, leading to a stroke.
Blood vessel abnormalities. (Arteriovenous malformations) Weaknesses in the blood vessels in and around the brain may be present at birth and diagnosed only if symptoms develop.
Amyloid angiopathy. This is an abnormality of the blood vessel walls that sometimes occurs with aging and high blood pressure. It may cause many small, unnoticed bleeds before causing a large one.
Blood or bleeding disorders. Hemophilia and sickle cell anemia can both contribute to decreased levels of blood platelets.
Liver disease. This condition is associated with increased bleeding in general.
What Are the Symptoms of Brain Bleeding?
The symptoms of a brain hemorrhage can vary. They depend on the location of the bleeding, the severity of the bleeding, and the amount of tissue affected. Symptoms may develop suddenly or over time. They may progressively worsen or suddenly appear.
If you exhibit any of the following symptoms, you may have a brain hemorrhage. This is a life-threatening condition, and you should call 911 or go to an emergency room immediately. The symptoms include:
A sudden severe headache
Seizures with no previous history of seizures
Weakness in an arm or leg
Nausea or vomiting
Decreased alertness; lethargy
Changes in vision
Tingling or numbness
Difficulty speaking or understanding speech
Difficulty writing or reading
Loss of fine motor skills, such as hand tremors
Loss of coordination
Loss of balance
An abnormal sense of taste
Loss of consciousness
Keep in mind that many of these symptoms are often caused by conditions other than brain hemorrhages.