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What causes stroke?
Brain cells are incredibly delicate and require a steady supply of oxygen. Even brief interruptions in the delivery of oxygen can cause injury.
Strokes are caused by three main mechanisms:
In all of these cases, the injury to the brain tissue and the lack of oxygen cause some of the brain cells to die, resulting in a stroke.
What are some conditions that are associated with strokes?
The following genetic conditions may lead to stroke:
Embolic strokes are usually caused by an embolus - a blood clot that forms elsewhere in the body and travels to the brain. Embolic strokes may be associated with the following conditions:
Thrombotic stroke are caused by a thrombus, or blood clot, that develops in the arteries that supply blood to the brain. Thrombotic strokes may be associated with the following conditions:
Or acquired, such as deficiencies in clotting pathways resulting from:
Vasculitis, which refers to blood vessel inflammation, may be caused by infectious or noninfectious conditions.
Infections causes include:
Noninfectious causes encompass a wide variety of autoimmune disorders, including:
Stokes may also be caused by
What are the symptoms of a stroke?
Stroke symptoms vary widely depending on which part of the brain has been injured. Some parts of the brain can suffer strokes with little or no recognizable symptoms, referred to as "silent" strokes. Other strokes, even very small ones, can cause devastating symptoms, such as paralysis, blindness or even death, if they occur in sensitive areas of the brain.
We are grateful to have been ranked #1 on U.S. News & World Report's list of the best children's hospitals in the nation for the third year in a row, an honor we could not have achieved without the patients and families who inspire us to do our very best for them. Thanks to you, Boston Children's is a place where we can write the greatest children's stories ever told.”