A brief episode of reduced blood flow to the brain. Symptoms are 'stroke-like' – with temporary blurring of vision, slurring of speech, numbness, and muscle weakness common features – and last less than 24 hours. Transient ischaemic attacks (TIAs) are not included in the definition of stroke even though they have a common cause. TIAs may be the precursor of a stroke; therefore patients who have had a TIA require urgent assessment and treatment.

Sudden onset of brain dysfunction (eg. paralysis, slurred speech, loss of consciousness, visual disturbance) which recovers completely within 24 hours. Usually an indication of underlying vascular disease. [See "RIND", "CVA"] [ Quick find

Mini-stroke caused by temporary lack of blood supply to the brain.

(TIA) transient impairment (less than 24 hours) of the blood supply to the brain causing symptoms similar to stroke

A temporary reduction in oxygen supply to the brain. It can cause temporary symptoms such as dizziness, slurred speech and weakness or numbness on one side of the body. It normally resolves completely.