Transient global amnesia (TGA) consists of a sudden and transient loss of memory. Recent memory fades, so that the patient does not remember where he is and how he got there. The patient asks repeated and stereotyped questions because he no longer reminds the answers he has just received. The differential diagnosis is especially made with the transient ischemic attack (TIA), temporal seizure and migraine attacks. TGA is a disease whose frequency is not high and once appeared, it rarely repeats. Although the duration of the clinical signs is small and memory disorders recovery is good, the sudden appearance of TGA is sometimes dramatic and poses many problems both to patients and caregivers.