Abbreviation:<unk> 
New Definition: a brief episode of neurologic dysfunction caused by focal brain, spinal cord or retinal<unk> , with clinical symptoms typically lasting less than one hour, and without evidence of acute infarction. 
Should be viewed as analogous to unstable angina
Classic Definition:  A sudden, focal neurologic deficit that lasts for less than 24 hours, is presumed to be of vascular origin, and is confined to an area of the brain or eye perfused by a specific artery
Since 15% of strokes are preceded by<unk> , timely eval of high risk conditions like Atrial Fibrillation and Carotid Stenosis is important
Should be viewed as analogous to unstable angina
Transient ischemic attack
Stroke
Ischemic stroke
Seizures/postictal paralysis 
Subarachnoid hemorrhage
Syncope
Hemorrhagic stroke
Subdural hemorrhage