Transient Ischemic Attack (TIA)

A transient ischemic attack (TIA) is an episode of stroke-like symptoms. It usually lasts less than one hour. A TIA is sometimes called a ministroke. During a TIA, circulation to a part of the brain is interrupted briefly, then restored. This interruption can be caused by: A narrowing of a brain artery because of atherosclerosis. A small floating blood clot. This clot enters the bloodstream from somewhere else in the body, often the heart. It temporarily blocks a brain artery.
To continue reading this article, you must login.
  • Research health conditions
  • Check your symptoms
  • Prepare for a doctor's visit or test
  • Find the best treatments and procedures for you
  • Explore options for better nutrition and exercise
Learn more about the many benefits and features of joining Harvard Health Online »