What is the nature of a transient ischemic attack?

A transient ischemic attack (TIA) is characterized by temporary episodes of neurological dysfunction caused by a brief interruption of blood flow to the brain. The defining feature of a TIA is that its symptoms are reversible and usually resolve within a short timeframe, typically under 24 hours.

This resolution within 24 hours is a critical element distinguishing TIAs from other cerebrovascular events, such as strokes, which can lead to permanent brain damage if blood flow is not restored in time. While TIAs may present symptoms similar to those of strokes—such as weakness, numbness, or difficulty speaking—they do not cause lasting effects, making timely recognition and management essential for preventing potential subsequent strokes.

Given this understanding, the statement that a transient ischemic attack is fully resolved within 24 hours accurately reflects the transient nature of the event and is the correct response regarding its characteristics.