Transient ischemic attack (TIA)

Transient ischemic attack (TIA)

Also known as: TIA; Mini-stroke

Some people call a transient ischemic attack (TIA) a mini-stroke, because the symptoms are like those of a stroke but do not last long. A TIA happens when blood flow to part of the brain is blocked or reduced, often by a blood clot. After a short time, blood flows again and the symptoms go away. With a stroke, the blood flow stays blocked, and the brain has permanent damage.

A TIA is a warning: It means you are likely to have a stroke in the future. If you think you are having a TIA, call 911. Early treatment can help prevent a stroke. If you think you have had a TIA but your symptoms have gone away, you still need to call your doctor right away.

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From the experts

Ask an expert: Can a traumatic event cause a stroke?

Q: "I have an 80-year-old friend who suffered a stroke during a car accident. She was a passenger in a car that rolled over and left her upside down for about 30 minutes. Could the stress of this accident have caused her stroke? How?"

Ask an Expert: Can you have a stroke and not know it?

Q: Is it possible to have a stroke and not know it, like if you're sleeping or the symptoms are mild?

Ask an Expert: Stroke vs. TIA

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Recommended Resources

American Heart Association Website