Ischemia
The word "ischemia" () is from Greek ἴσχαιμος "iskhaimos", "staunching blood" from ἴσχω "iskhο", "keep back, restrain" and αἷμα "haima", "blood".
Transient global amnesia
Cerebral ischemia is a frequently disputed possible cause, at least for some segment of the TGA population, and until the 1990s it was generally thought that TGA was a variant of transient ischemic attack (TIA) secondary to some form of cerebrovascular disease. Those who argue against a vascular cause point to evidence that those experiencing TGA are no more likely than the general population to have subsequent cerebral vascular disease. In fact, "in comparison with TIA patients, TGA patients had a significantly lower risk of combined stroke, myocardial infarct, and death."