What are transient neurologic attacks (TNAs)?

Updated: Dec 03, 2018
  • Author: Ashish Nanda, MD; Chief Editor: Andrew K Chang, MD, MS  more...
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It has been suggested that transient ischemic attacks (TIAs) are a subset of a larger category termed transient neurologic attacks (TNAs). TNAs are defined as episodes of sudden onset of neurological symptoms that completely resolve within 24 hours and have no clear diagnosis. When a TNA is associated with focal symptoms attributed to an arterial territory of the brain, it is consistent with a stroke or TIA and is termed a focal TNA.

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