But there are steps you can take to help lower your risk, including: Some risk factors for stroke, such as age, race and ethnicity, and family history, can’t be controlled. Don’t delay if you or someone you know experiences any symptoms. The earlier someone with a stroke arrives at the hospital, the more likely they are to receive effective treatment. If a TIA is not treated quickly, it could be followed by a major stroke within hours or days. You must call 911 and get medical help right away. This is called a transient ischemic attack (TIA), a mini-stroke, or a warning stroke. Sometimes the symptoms of a stroke last for a short time (minutes to hours) and then go away. The bleeding also increases pressure inside the skull that can compress brain tissue and cause damage. This break reduces delivery of oxygen and nutrients to brain cells and exposes the brain tissue to toxic substances that may cause the cells to die. It’s marked by a burst blood vessel that causes blood to leak into or around the brain. Hemorrhagic stroke: This is the second major kind of stroke.
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