When the blood supply to the brain is interrupted or blocked for any reason, the consequences are usually dramatic. Control over movement, perception, speech, or other mental or bodily functions is impaired, and consciousness itself may be lost. Disruptions of blood circulation to the brain may result in a stroke -- a disorder that occurs in two basic forms, both potentially life-threatening.
Clots near the brain. About three-quarters of all strokes are due to blockage of the oxygen-rich...
Symptoms of an ischemic stroke (caused by a blood clot) vary from one person to another. But symptoms usually occur in the side of the body opposite from the side of the brain where the clot occurred. For example, a stroke in the right side of the brain affects the left side of the body.
Symptoms of a stroke may be so minor that they are ignored or
go unnoticed. Some people have symptoms that go away after a short time. This could be caused by a transient ischemic attack, or TIA. A TIA is a warning sign that a stroke may soon follow.
The symptoms of a hemorrhagic stroke (caused by bleeding in the brain) are usually the same as those from a blood clot. But you also may have other symptoms, such as:
Severe headache, sometimes in a specific
Nausea and vomiting.
Dizziness, seizures, or changes in mental state, such as
irritability, confusion, and possibly unconsciousness.
Hemorrhagic strokes usually occur during the daytime and during
physical activity. Symptoms of a hemorrhagic stroke usually begin very
suddenly (within seconds) and get worse over several hours.
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This information is produced and provided by the National
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Institute via the Internet web site at http://
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WebMD Medical Reference from Healthwise
September 09, 2014
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