Table 1.

The explicit diagnostic criteria for transient ischemic attacks (EDCT) [2, 3]

A Sudden onset of fully reversible neurological or retinal symptoms (typically hemiparesis, hemihypesthesia, aphasia, neglect, amaurosis fugax, hemianopsia, or hemiataxia)

B Duration < 24 h

C At least two of the following

C1 At least 1 Symptom is maximal in < 1 min (no gradual spread)

C2 2 or more symptoms occur simultaneously

C3 Symptoms in the form of deficits (no irritative symptoms such as photopsias, pins and needles, etc.)

C4 No headache accompanies or follows the neurological symptoms within 1 h

C* At least two of the following

C1* All symptoms are maximal in < 1 min (no gradual spread)

C2* All symptoms occur simultaneously

C3* All symptoms are deficits (no irritative symptoms such as photopsias, pins and needles, etc.)

C4* No headache accompanies or follows the neurological symptoms within 1 h

D None of the following isolated symptoms (can occur together with more typical symptoms): shaking spells, diplopia, dizziness, vertigo, syncope, decreased level of consciousness, confusion, hyperventilation associated paresthesias, unexplained falls or amnesia

E No evidence of acute infarction in the relevant area on neuroimaging

The C criterion is different between the original and the modified* version