A transient ischaemic attack (TIA, also known as 'mini-stroke') is a "transient (less than 24 hours) neurological dysfunction caused by focal brain, spinal cord, or retinal ischemia, without evidence of acute infarction".

TIAs are associated with increased risk of ischaemic stroke (particularly in the short-term), highlighting higher risk patients who should be assessed for aggressive management of stroke risk factors.

NICE CKS - Stroke and TIA

» Terminology