Transient Ischemic Attack (TIA) - What Happens

A transient ischemic attack (TIA) is a warning sign that a stroke may soon follow. After a TIA, you have a higher risk of having a stroke. Any symptoms of a TIA need to be treated as an emergency.

  • After a TIA, up to 10 out of 100 people will have a stroke within the next 2 days. And up to 17 out of 100 people will have a stroke within 90 days.1
  • A TIA happens before 15 out of 100 strokes.1

A TIA also may signal an increased risk for a heart attack. Atherosclerosis, which is hardening of the arteries, affects blood vessels throughout the body, including arteries that supply blood to the heart and brain. If you have atherosclerosis in arteries to your brain, you may also have it in arteries to your heart (coronary artery disease). If you have coronary artery disease, you are at risk for a heart attack.

WebMD Medical Reference from Healthwise
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